By Cecille Kennedy | Oregon Coast, Oregon

By Frank Lu | Arlington, Texas, USA

By Hassan Dadashi Arani | Esfahan province. Iran

By Nancy Schuster | 7 miles east of Pueblo, Colorado on the Mesa.

By Kevan Hubbard | Seaton Carew,Co Durham, England

By Muhammad Alaa | Egypt

By Moises Villafane | Rio Grande, Puerto Rico

By Cecille Kennedy | Fogarty Park, Depoe Bay, Oregon

By Hassan Dadashi Arani | Esfahan province. Iran

By Donna Eck | Fremont Peak State Park

By Patricio Leon | Santiago, Chile

By Catherine Hyde | Cambria, California, USA

By Mario Rana | Hampton, Virginia

By Roberto Burkle | Playa del Carmen, Quintana Roo, México

By Kevan Hubbard | Teesmouth Nature Reserve,Co Durham, England

By Elizabeth Bettenhausen | Cambria, CA, USA