By D. S. | Quail Hill Loop Trail, Irvine, CA, USA

By Elizabeth Seeley | Morgantown, West Virginia

By Scott Rose | Concord, NC, USA

By Mario Rana | Hampton, Virginia

By EGIDIO VERGANI | Milano-Italy

By Kelly Whitt | Antelope Canyon Arizona

By Kathie O'Donnell | Buffalo, WY

By Gaelle Vermeire | Labro

By Cecille Kennedy | Monroe, Oregon

By Steve Wilson | Salina, Kansas USA

By Rui Santos | Leiria, Portugal

By Roberto Ortu | Cabras, Sardinia, Italy

By Stephen Montag | Livingston, NJ

By Stephen Montag | Livingston, NJ

By Steven Sweet | Mississauga, Ontario Canada

By Makrem Larnaout | Tunis