Free images results:

Sunsets pictures, stock photos and images


Sun waves Stock Photo
Author: Lakisf

Also, here are some commercial RF-licensed images that match your search criteria:  
Sunsets Stock Photo
Author: Tadija
Sunsets Stock Photography
Author: Dinna79
Sunsets Royalty Free Stock Photos
Author: Franconi
Sunsets Royalty Free Stock Image
Author: Dinna79