Editorial image. Not to be used in commercial designs and/or advertisements. Click here for terms and conditions.
Sierra Vista, Arizona - October 30: The Murray Springs - Clovis Trail on October 30, 2011, east of Sierra Vista, Arizona. A pair of hikers stand on the Murray Springs - Clovis Paleoindian Site Trail where ancient human artifacts and woolly mammoths from 13,000 years ago have been excavated.