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Fort Jefferson. The Formidable Fort Jefferson in Dry Tortugas National Park, Florida Keys Royalty Free Stock PhotographyFort Jefferson. The Formidable Fort Jefferson in Dry Tortugas National Park, Florida KeysFort Jefferson Arches. A Series of Arches in Fort Jefferson, Dry Tortugas National Park, Florida Keys Stock PhotoFort Jefferson Arches. A Series of Arches in Fort Jefferson, Dry Tortugas National Park, Florida KeysJoshua Tree. A lone Joshua Tree in California's Joshua Tree National Park Stock ImagesJoshua Tree. A lone Joshua Tree in California's Joshua Tree National ParkBurrowing Owl. One of the many protected burrowing owls on the campus of Florida Atlantic University, Boca Raton, Florida Royalty Free Stock PhotographyBurrowing Owl. One of the many protected burrowing owls on the campus of Florida Atlantic University, Boca Raton, FloridaZabriskie Point. A close up shot of Zabriskie Point in California's Death Valley National Park Stock ImagesZabriskie Point. 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A lighthouse silhouette on Loggerhead Key, Dry Tortugas National Park Stock PhotoLoggergead Light. A lighthouse silhouette on Loggerhead Key, Dry Tortugas National ParkLoxahatchee River. Loxahatchee National Wild & Scenic River, Jonathan Dickinson State Park, South Florida Royalty Free Stock PhotographyLoxahatchee River. Loxahatchee National Wild & Scenic River, Jonathan Dickinson State Park, South FloridaThe Loxahatchee River. Loxahatchee National Wild & Scenic River, South Florida Stock ImagesThe Loxahatchee River. Loxahatchee National Wild & Scenic River, South FloridaSierra Nevada. The Sierra Nevada mountains in the state of California Stock PhotoSierra Nevada. The Sierra Nevada mountains in the state of CaliforniaClouds Over White Sands. Clouds burst over White Sands National Monument, New Mexico Royalty Free Stock ImageClouds Over White Sands. Clouds burst over White Sands National Monument, New MexicoBig Cypress Hunting. 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The Grand Canyon Desert View Watchtower in Grand Canyon National Park, ArizonaMountain Cabins. Historic rustic cabins in the Smokey Mountains, taken off of Roaring Fork Motor Nature Trail in Great Smokey Mountains National Park Royalty Free Stock PhotoMountain Cabins. Historic rustic cabins in the Smokey Mountains, taken off of Roaring Fork Motor Nature Trail in Great Smokey Mountains National ParkJoshua Tree. A Joshua Tree stands alone in Joshua Tree National Park, California Royalty Free Stock PhotographyJoshua Tree. A Joshua Tree stands alone in Joshua Tree National Park, CaliforniaJoshua Tree & Boulders. A Joshua Tree and Boulders in Joshua Tree National Park, California Royalty Free Stock ImageJoshua Tree & Boulders. A Joshua Tree and Boulders in Joshua Tree National Park, CaliforniaOld Spanish Mission. Mission San Jose y San Miguel de Aguayo in San Antonio, Texas Stock PhotoOld Spanish Mission. Mission San Jose y San Miguel de Aguayo in San Antonio, TexasHillsborough River, Florida. Rapids on the Hillsborough River in Florida Stock PhotosHillsborough River, Florida. Rapids on the Hillsborough River in FloridaRoad Through Manzanar. The main road through Manzanar National Historic Site, California (Sierra Nevada in the background Royalty Free Stock ImageRoad Through Manzanar. The main road through Manzanar National Historic Site, California (Sierra Nevada in the backgroundBig Sur. The Big Sur coastline in central California Royalty Free Stock PhotosBig Sur. The Big Sur coastline in central CaliforniaHistoric Highway. Smokey Mountains Road to Nowhere in the Great Smokey Mountains National Park Royalty Free Stock PhotosHistoric Highway. Smokey Mountains Road to Nowhere in the Great Smokey Mountains National ParkDesolate Death Valley landscape. A desolate landscape in Death Valley National Park, California Stock PhotoDesolate Death Valley landscape. A desolate landscape in Death Valley National Park, CaliforniaStorm Over the Everglades. Storm clouds over the scenic Wagon Wheel Road in the Florida Everglades, Big Cypress National Preserve Royalty Free Stock PhotosStorm Over the Everglades. Storm clouds over the scenic Wagon Wheel Road in the Florida Everglades, Big Cypress National PreserveThe Tepees. In Petrified Forest National Park, Arizona Stock PhotographyThe Tepees. In Petrified Forest National Park, ArizonaValley of the Gods. Rock formations in the Valley of the Gods, southeastern Utah Stock ImagesValley of the Gods. Rock formations in the Valley of the Gods, southeastern UtahCottonmouth. A venomous cottonmouth crosses Wagon Wheel Road, Big Cypress National Preserve Stock PhotoCottonmouth. A venomous cottonmouth crosses Wagon Wheel Road, Big Cypress National PreserveWood Storks. Endangered Wood Storks quarrel on Wagon Wheel Road in Big Cypress National Preserve, Florida Everglades Stock ImageWood Storks. Endangered Wood Storks quarrel on Wagon Wheel Road in Big Cypress National Preserve, Florida EvergladesThree Wood Storks. Wood Storks on Wagon Wheel Road in Big Cypress National Preserve, Florida Everglades Royalty Free Stock ImageThree Wood Storks. Wood Storks on Wagon Wheel Road in Big Cypress National Preserve, Florida EvergladesBig Cypress Swamp. Cypress Trees & Pond in the Everglades, Big Cypress National Preserve Stock ImageBig Cypress Swamp. Cypress Trees & Pond in the Everglades, Big Cypress National PreserveBig Sur. The Big Sur coastline along central California Stock ImageBig Sur. The Big Sur coastline along central CaliforniaSmokey Mountains Creek. A creek runs alongside the hiking trail to Chimney Tops, Great Smokey Mountains National Park Royalty Free Stock PhotoSmokey Mountains Creek. A creek runs alongside the hiking trail to Chimney Tops, Great Smokey Mountains National ParkSand Dunes. In Death Valley National Park, California Stock PhotosSand Dunes. In Death Valley National Park, CaliforniaFoggy Everglades Morning. A foggy winter morning in the Everglades, Big Cypress National Preserve Royalty Free Stock ImageFoggy Everglades Morning. A foggy winter morning in the Everglades, Big Cypress National PreserveFort Jefferson. Self-guided walking tour of Fort Jefferson, Dry Tortugas National Park, Florida Keys Royalty Free Stock ImagesFort Jefferson. Self-guided walking tour of Fort Jefferson, Dry Tortugas National Park, Florida KeysEverglades Landscape. Young Pines await a summer thunderstorm in the Florida Everglades, Big Cypress National Preserve Stock ImagesEverglades Landscape. Young Pines await a summer thunderstorm in the Florida Everglades, Big Cypress National PreserveGrand Canyon Sunrise. A beautiful and glowing sunrise in Grand Canyon National Park Stock PhotoGrand Canyon Sunrise. A beautiful and glowing sunrise in Grand Canyon National ParkDesert Bighorn Sheep. A rarely seen desert bighorn sheep in Joshua Tree National Park, California Royalty Free Stock PhotographyDesert Bighorn Sheep. A rarely seen desert bighorn sheep in Joshua Tree National Park, CaliforniaHiking Endpoint. A hiking trail reaches its endpoint in Mesa Verde National Park, Colorado Royalty Free Stock PhotosHiking Endpoint. A hiking trail reaches its endpoint in Mesa Verde National Park, ColoradoJanes Scenic Highway. The historic Janes Scenic Highway as it cuts through Fakahatchee Strand Preserve State Park, Florida Everglades Royalty Free Stock PhotoJanes Scenic Highway. The historic Janes Scenic Highway as it cuts through Fakahatchee Strand Preserve State Park, Florida EvergladesKayaking the Everglades. A kayak cruises the Turner River in the Florida Everglades, Big Cypress National Preserve Royalty Free Stock PhotographyKayaking the Everglades. A kayak cruises the Turner River in the Florida Everglades, Big Cypress National PreserveLoggerhead Light. House in the Florida Keys, Dry Tortugas National Park Stock ImagesLoggerhead Light. House in the Florida Keys, Dry Tortugas National ParkOld Mill. In the Great Smokey Mountains National Park Royalty Free Stock ImageOld Mill. In the Great Smokey Mountains National ParkFlorida Panther Track. A rare Florida Panther track in the Everglades, Fakahatchee Strand Preserve State Park Royalty Free Stock PhotographyFlorida Panther Track. A rare Florida Panther track in the Everglades, Fakahatchee Strand Preserve State ParkPainted Desert. The Painted Desert in Arizona's Petrified Forest National Park Stock PhotographyPainted Desert. The Painted Desert in Arizona's Petrified Forest National ParkGreen Snake. A green snake in action in the Florida Everglades, Big Cypress National Preserve Stock PhotoGreen Snake. A green snake in action in the Florida Everglades, Big Cypress National PreserveShark Valley. Hiking & Biking Trail in the Florida Everglades Stock PhotoShark Valley. Hiking & Biking Trail in the Florida EvergladesSweetwater Strand. In the Florida Everglades, Big Cypress National Preserve Royalty Free Stock PhotosSweetwater Strand. In the Florida Everglades, Big Cypress National PreserveTurner River. The Turner River in the Florida Everglades, Big Cypress National Preserve Royalty Free Stock ImageTurner River. The Turner River in the Florida Everglades, Big Cypress National PreserveValley of the Gods. A desert landscape in Utah's Valley of the Gods Royalty Free Stock PhotographyValley of the Gods. A desert landscape in Utah's Valley of the GodsValley of the Gods Auto Tour. Auto Touring in Utah's Valley of the Gods Stock PhotosValley of the Gods Auto Tour. Auto Touring in Utah's Valley of the GodsValley of the Gods in Southeastern Utah. Geological Formations in Utah's Valley of the Gods Royalty Free Stock PhotographyValley of the Gods in Southeastern Utah. Geological Formations in Utah's Valley of the GodsWhite Sands. National Monument in New Mexico, American Southwest Stock PhotosWhite Sands. National Monument in New Mexico, American SouthwestWhite Sands Plant Life. White Sands National Monument in New Mexico, American Southwest Royalty Free Stock PhotosWhite Sands Plant Life. White Sands National Monument in New Mexico, American SouthwestZabriskie Point, Death Valley. Zabriskie Point in California's Death Valley National Park Stock PhotosZabriskie Point, Death Valley. Zabriskie Point in California's Death Valley National ParkEverglades Hammock. An Everglades hammock surrounded by fog on a winter morning, Big Cypress National Preserve Royalty Free Stock PhotographyEverglades Hammock. An Everglades hammock surrounded by fog on a winter morning, Big Cypress National PreserveColorado River. The Colorado as it meanders through the Grand Canyon Stock PhotoColorado River. The Colorado as it meanders through the Grand CanyonDwarf Cypress Trees. A warped cypress tree in Everglades National Park, Florida Royalty Free Stock ImageDwarf Cypress Trees. A warped cypress tree in Everglades National Park, FloridaDe Soto Falls. The scenic De Soto Falls in the Chattahoochee National Forest Stock PhotoDe Soto Falls. The scenic De Soto Falls in the Chattahoochee National ForestFlorida Trail. A flooded Florida Trail cuts through the Everglades, Big Cypress National Preserve Stock PhotoFlorida Trail. A flooded Florida Trail cuts through the Everglades, Big Cypress National PreserveTaylor Slough. Scenic view of Taylor Slough in Everglades National Park Stock PhotosTaylor Slough. Scenic view of Taylor Slough in Everglades National ParkFort Pickens. Historic Fort Pickens on Santa Rosa Island, Pensacola, Gulf Islands National Seashore Stock ImageFort Pickens. Historic Fort Pickens on Santa Rosa Island, Pensacola, Gulf Islands National SeashoreFort Pickens Bastion. Fort Pickens on Santa Rosa Island, Pensacola, Gulf Islands National Seashore Royalty Free Stock PhotoFort Pickens Bastion. Fort Pickens on Santa Rosa Island, Pensacola, Gulf Islands National SeashoreFoggy Canyon. A foggy section of Arizona's Grand Canyon Stock ImageFoggy Canyon. A foggy section of Arizona's Grand CanyonGrand Canyon National Park. Desert Landscape in Grand Canyon National Park Royalty Free Stock PhotographyGrand Canyon National Park. Desert Landscape in Grand Canyon National ParkGrand Canyon Mesa Top. Geological formation in Grand Canyon National Park Stock ImagesGrand Canyon Mesa Top. Geological formation in Grand Canyon National ParkEverglades Hiking. A hiking trail traverses pinelands in Long Pine Key, Everglades National Park Royalty Free Stock PhotographyEverglades Hiking. A hiking trail traverses pinelands in Long Pine Key, Everglades National ParkClass II Rapids on the Hillsborough River. The scenic Hillsborough River winds through a subtropical landscape, Hillsborough River State Park, Southwest Florida Royalty Free Stock ImagesClass II Rapids on the Hillsborough River. The scenic Hillsborough River winds through a subtropical landscape, Hillsborough River State Park, Southwest FloridaCypress Knees, Hillsborough River. The scenic Hillsborough River winds through a subtropical landscape, Hillsborough River State Park, Southwest Florida Stock PhotographyCypress Knees, Hillsborough River. The scenic Hillsborough River winds through a subtropical landscape, Hillsborough River State Park, Southwest FloridaCypress Tree, Hillsborough River. The scenic Hillsborough River winds through a subtropical landscape, Hillsborough River State Park, Southwest Florida Royalty Free Stock PhotoCypress Tree, Hillsborough River. The scenic Hillsborough River winds through a subtropical landscape, Hillsborough River State Park, Southwest FloridaCypress Tree, Hillsborough River. The scenic Hillsborough River winds through a subtropical landscape, Hillsborough River State Park, Southwest Florida Stock PhotographyCypress Tree, Hillsborough River. The scenic Hillsborough River winds through a subtropical landscape, Hillsborough River State Park, Southwest FloridaRapids, Hillsborough River. The scenic Hillsborough River winds through a subtropical landscape, Hillsborough River State Park, Southwest Florida Royalty Free Stock PhotoRapids, Hillsborough River. The scenic Hillsborough River winds through a subtropical landscape, Hillsborough River State Park, Southwest FloridaJoshua Tree National Park. Desert landscape in Joshua Tree National Park, California Royalty Free Stock ImageJoshua Tree National Park. Desert landscape in Joshua Tree National Park, CaliforniaKissimmee Prairie State Preserve. A subtropical landscape in Kissimmee Prairie State Preserve, Florida Stock PhotoKissimmee Prairie State Preserve. A subtropical landscape in Kissimmee Prairie State Preserve, FloridaSubtropical Wilderness. The Florida Everglades in Loxahatchee National Wildlife Refuge Stock ImagesSubtropical Wilderness. The Florida Everglades in Loxahatchee National Wildlife RefugeIllinois Memorial. In Vicksburg National Military Park, Mississippi Royalty Free Stock PhotoIllinois Memorial. In Vicksburg National Military Park, MississippiBig Cypress Moonrise. The moon rises over cypress trees in the Everglades Royalty Free Stock PhotosBig Cypress Moonrise. The moon rises over cypress trees in the EvergladesSea Lions. A pair of very cute sea lions Stock PhotoSea Lions. A pair of very cute sea lionsEverglades Pinelands. Pinelands in Long Pine Key, Everglades National Park Stock ImagesEverglades Pinelands. Pinelands in Long Pine Key, Everglades National ParkWaterfalls. In Great Smokey Mountains National Park Stock PhotoWaterfalls. In Great Smokey Mountains National ParkWhite Sands. Plant life in White Sands National Monument, New Mexico Royalty Free Stock ImageWhite Sands. Plant life in White Sands National Monument, New MexicoFoggy Winter Morning in the Everglades. Fog spreads over an Everglades landscape in Big Cypress National Preserve Stock ImageFoggy Winter Morning in the Everglades. Fog spreads over an Everglades landscape in Big Cypress National PreserveMesa Verde Tour Group. Visitors are taken on an educational tour through Cliff Palace in Mesa Verde National Park Stock ImageMesa Verde Tour Group. Visitors are taken on an educational tour through Cliff Palace in Mesa Verde National ParkGrand Canyon Tourism. A tour guide and visitors ascend the popular Bright Angel Trail in Grand Canyon National Park Royalty Free Stock ImageGrand Canyon Tourism. A tour guide and visitors ascend the popular Bright Angel Trail in Grand Canyon National ParkRanger in Action. A Park Ranger lectures visitors to Cliff Palace, Mesa Verde National Park Stock PhotoRanger in Action. A Park Ranger lectures visitors to Cliff Palace, Mesa Verde National ParkTour Group. A National Park Service Ranger prepares visitors for a hike to Cliff Palace, Mesa Verde National Park Royalty Free Stock PhotoTour Group. A National Park Service Ranger prepares visitors for a hike to Cliff Palace, Mesa Verde National ParkEverglades Backcountry Trail. A backcountry ORV trail cuts through a sawgrass prairie in the Florida Everglades, Big Cypress National Preserve Stock PhotosEverglades Backcountry Trail. A backcountry ORV trail cuts through a sawgrass prairie in the Florida Everglades, Big Cypress National PreserveEverglades Rainstorm. Dark storm clouds form over the scenic Turner River Road, Big Cypress National Preserve Royalty Free Stock ImageEverglades Rainstorm. Dark storm clouds form over the scenic Turner River Road, Big Cypress National PreserveJanes Scenic Highway. As it crosses Fakahatchee Strand Preserve State Park, Florida Everglades Royalty Free Stock ImagesJanes Scenic Highway. As it crosses Fakahatchee Strand Preserve State Park, Florida EvergladesGuard Tower. Old guard tower in the Castillo de San Marcos, St. Augustine, Florida Stock ImageGuard Tower. Old guard tower in the Castillo de San Marcos, St. Augustine, FloridaVast Desert. A vast desert in Death Valley National Park Royalty Free Stock PhotoVast Desert. A vast desert in Death Valley National ParkFoggy Big Sur Evening. A heavy fog sets over a Big Sur neighborhood in California Stock PhotoFoggy Big Sur Evening. A heavy fog sets over a Big Sur neighborhood in CaliforniaGolden Gate Bridge. Fog envelops the Golden Gate Bridge on a chilly San Francisco evening Stock ImagesGolden Gate Bridge. Fog envelops the Golden Gate Bridge on a chilly San Francisco eveningLarge Boulders. In Joshua Tree National Park, California Stock PhotosLarge Boulders. In Joshua Tree National Park, CaliforniaVicksburg National Military Park. Entrance to the site of a major American Civil War battlefield Stock ImageVicksburg National Military Park. Entrance to the site of a major American Civil War battlefieldTrapper Nelson's. A historic homestead in Florida's Jonathan Dickinson State Park Royalty Free Stock ImagesTrapper Nelson's. A historic homestead in Florida's Jonathan Dickinson State ParkArizona's Painted Desert. The Painted Desert in Petrified Forest National Park Royalty Free Stock ImagesArizona's Painted Desert. The Painted Desert in Petrified Forest National ParkGrand Canyon. Varying geological formations in the Grand Canyon Stock PhotoGrand Canyon. Varying geological formations in the Grand CanyonUtah Landscape. A desert landscape in the southeastern part of Utah Stock ImagesUtah Landscape. A desert landscape in the southeastern part of UtahFort Jefferson. Signs tell visitors to keep off Fort Jefferson's unstable walls, Dry Tortugas National Park Stock PhotoFort Jefferson. Signs tell visitors to keep off Fort Jefferson's unstable walls, Dry Tortugas National ParkDry Tortugas National Park. A view from Samuel Mudd's prison cell in historic Fort Jefferson Stock ImageDry Tortugas National Park. A view from Samuel Mudd's prison cell in historic Fort JeffersonFort Jefferson. The Gibraltar of the Gulf stands guard over the Florida Straits, Dry Tortugas National Park Stock ImagesFort Jefferson. The Gibraltar of the Gulf stands guard over the Florida Straits, Dry Tortugas National ParkFort Zachary Taylor. An old Civil War-era fortress stands guard over Key West, Florida Royalty Free Stock PhotoFort Zachary Taylor. An old Civil War-era fortress stands guard over Key West, FloridaArtillery Row. An array of artillery pieces line a gallery in Fort Zachary Taylor, Key West Stock ImagesArtillery Row. An array of artillery pieces line a gallery in Fort Zachary Taylor, Key WestFort Zachary Taylor Historic State Park. The formidable Fort Taylor in Key West, Florida Royalty Free Stock ImageFort Zachary Taylor Historic State Park. The formidable Fort Taylor in Key West, FloridaFort Taylor Parade Ground. Fort Zachary Taylor State Historic Park, Key West, Florida Stock ImagesFort Taylor Parade Ground. Fort Zachary Taylor State Historic Park, Key West, FloridaCades Cove. Scenic and historic Cades Cove in the Great Smokey Mountains Stock PhotosCades Cove. Scenic and historic Cades Cove in the Great Smokey MountainsIce Falls. Water rushes through melting ice in Great Smokey Mountains National Park Royalty Free Stock ImageIce Falls. Water rushes through melting ice in Great Smokey Mountains National ParkGrand Canyon Landscape. Mountainous Landscape in Grand Canyon National Park, Arizona Royalty Free Stock ImageGrand Canyon Landscape. Mountainous Landscape in Grand Canyon National Park, ArizonaLarge Boulders. In Joshua Tree National Park, California Stock PhotoLarge Boulders. In Joshua Tree National Park, CaliforniaNative American Cliff Dwellings. In Walnut Canyon National Monument, Arizona Stock ImagesNative American Cliff Dwellings. In Walnut Canyon National Monument, ArizonaWhite Sands. Dune formations in White Sands National Monument Stock ImageWhite Sands. Dune formations in White Sands National MonumentFreshwater Marsh. A freshwater marsh in the Florida Everglades, Big Cypress National Preserve Royalty Free Stock PhotoFreshwater Marsh. A freshwater marsh in the Florida Everglades, Big Cypress National PreserveEverglades Bobcat. A bobcat in the Everglades, Big Cypress National Preserve, Bear Island Unit Stock PhotoEverglades Bobcat. A bobcat in the Everglades, Big Cypress National Preserve, Bear Island UnitBig Cypress Landscape. Everglades Pinelands, Big Cypress National Preserve, Florida Stock PhotosBig Cypress Landscape. Everglades Pinelands, Big Cypress National Preserve, FloridaTropical Hammocks. Dot the landscape in Shark Valley, Everglades National Park Royalty Free Stock PhotosTropical Hammocks. Dot the landscape in Shark Valley, Everglades National ParkEverglades Backroad. The historic & scenic Loop Road after a hard rain, Big Cypress National Preserve, Florida Everglades Royalty Free Stock PhotographyEverglades Backroad. The historic & scenic Loop Road after a hard rain, Big Cypress National Preserve, Florida EvergladesDry Tortugas National Park. Arches in Historic Fort Jefferson, Florida Keys Stock PhotographyDry Tortugas National Park. Arches in Historic Fort Jefferson, Florida KeysFort Jefferson. The Gibraltar of the Gulf, Dry Tortugas National Park, Florida Keys Stock ImagesFort Jefferson. The Gibraltar of the Gulf, Dry Tortugas National Park, Florida KeysBrown Pelican. A brown pelican rests atop a post in Biscayne National Park, Florida Stock ImageBrown Pelican. A brown pelican rests atop a post in Biscayne National Park, FloridaSilver River. The scenic Silver River in Silver River State Park, Florida Stock PhotosSilver River. The scenic Silver River in Silver River State Park, FloridaFort Clinch. State Park, Amelia Island, Florida Stock ImageFort Clinch. State Park, Amelia Island, FloridaOld Fort. A road circles historic Fort Clinch on Amelia Island, Florida Stock PhotographyOld Fort. A road circles historic Fort Clinch on Amelia Island, FloridaFort Clinch Tunnel. One of several brick passages in Fort Clinch, Florida Royalty Free Stock ImageFort Clinch Tunnel. One of several brick passages in Fort Clinch, FloridaFort Clinch State Park. Fort Clinch stands guard over the St. Mary's River, Florida Royalty Free Stock ImagesFort Clinch State Park. Fort Clinch stands guard over the St. Mary's River, FloridaBig Sur Hiking. A hiking trail along the Big Sur coast in California Stock ImageBig Sur Hiking. A hiking trail along the Big Sur coast in CaliforniaPacific Coast. A meadow along the Pacific Ocean in central California Stock ImagesPacific Coast. A meadow along the Pacific Ocean in central CaliforniaSmall Lake. A small lake along the road to Yosemite National Park Royalty Free Stock PhotographySmall Lake. A small lake along the road to Yosemite National ParkLakefront. One of several small lakes along the foothills of the Sierra Nevada Royalty Free Stock PhotoLakefront. One of several small lakes along the foothills of the Sierra NevadaYosemite National Park. Scenic landscape in California's Yosemite National Park Stock ImageYosemite National Park. Scenic landscape in California's Yosemite National ParkDeath Valley Desert Landscape. An arid desert in Death Valley National Park Royalty Free Stock PhotoDeath Valley Desert Landscape. An arid desert in Death Valley National ParkDeath Valley. Small plant life in Death Valley National Park Stock ImageDeath Valley. Small plant life in Death Valley National ParkGathering Elk. Elk gather before the Sierra Nevada Mountains, California Stock PhotosGathering Elk. Elk gather before the Sierra Nevada Mountains, CaliforniaPet Cemetery. Site of a pet cemetery in Manzanar National Historic Site Stock ImagePet Cemetery. Site of a pet cemetery in Manzanar National Historic SiteManzanar Entrance. Manzanar National Historic Site in California Royalty Free Stock PhotographyManzanar Entrance. Manzanar National Historic Site in CaliforniaTurquoise Trail. The Turquoise Trail as it leads to Madrid, New Mexico Stock ImagesTurquoise Trail. The Turquoise Trail as it leads to Madrid, New MexicoCliff Dwellings. Native American cliff dwelling ruins in Walnut Canyon National Monument, Arizona Stock PhotographyCliff Dwellings. Native American cliff dwelling ruins in Walnut Canyon National Monument, ArizonaWalnut Canyon. Native American ruins in Walnut Canyon National Monument, Arizona Royalty Free Stock ImagesWalnut Canyon. Native American ruins in Walnut Canyon National Monument, ArizonaThe Alamo. The historic Alamo in downtown San Antonio, Texas Royalty Free Stock PhotosThe Alamo. The historic Alamo in downtown San Antonio, TexasOld Military Chapel. In Castillo de San Marcos, St. Augustine, Florida Stock ImagesOld Military Chapel. In Castillo de San Marcos, St. Augustine, FloridaSpanish Artillery. In Castillo de San Marcos, St. Augustine, Florida Stock PhotoSpanish Artillery. In Castillo de San Marcos, St. Augustine, FloridaCastillo de San Marcos. St. Augustine, Florida Royalty Free Stock ImageCastillo de San Marcos. St. Augustine, FloridaGrotto Falls. In Great Smokey Mountains National Park Stock PhotoGrotto Falls. In Great Smokey Mountains National ParkSaw Palmetto. And pines dominate the landscape, Big Cypress National Preserve Stock ImagesSaw Palmetto. And pines dominate the landscape, Big Cypress National PreserveEverglades Mangroves. The mangroves of Florida Bay, Everglades National Park Stock PhotoEverglades Mangroves. The mangroves of Florida Bay, Everglades National ParkBobcat in the Everglades. A small bobcat rests on a backcountry road in the Everglades, Big Cypress National Preserve Royalty Free Stock PhotosBobcat in the Everglades. A small bobcat rests on a backcountry road in the Everglades, Big Cypress National PreserveRattlesnake. An eastern diamondback rattlesnake in the Everglades, Big Cypress National Preserve Stock PhotoRattlesnake. An eastern diamondback rattlesnake in the Everglades, Big Cypress National PreserveTurner River. The scenic Turner River in Big Cypress National Preserve, Florida Everglades Stock PhotosTurner River. The scenic Turner River in Big Cypress National Preserve, Florida EvergladesFalling Creek Falls. In the northern part of Florida Royalty Free Stock PhotosFalling Creek Falls. In the northern part of FloridaOld Military Road. The old military road leading from Fort Clinch, Fort Clinch State Park, Florida Stock PhotoOld Military Road. The old military road leading from Fort Clinch, Fort Clinch State Park, FloridaLittle Shoals Hiking. A backcountry trail takes hikers to Little Shoals on the Suwannee River, Florida Stock PhotographyLittle Shoals Hiking. A backcountry trail takes hikers to Little Shoals on the Suwannee River, FloridaSuwannee Hiking. Hiking to Little Shoals on the Suwannee River Royalty Free Stock ImagesSuwannee Hiking. Hiking to Little Shoals on the Suwannee RiverTarpon. Hungry tarpon gather in the Florida Keys Royalty Free Stock PhotographyTarpon. Hungry tarpon gather in the Florida KeysStranded Kayak. Low Tide on Long Key, Florida Keys Stock PhotographyStranded Kayak. Low Tide on Long Key, Florida KeysMission San José. Y San Miguel de Aguayo, San Antonio, Texas Royalty Free Stock PhotosMission San José. 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