By Andy Dungan | Near Cotopaxi, Colorado USA

By Mario Rana | Hampton, Virginia

By Sudhir Sharma | Stormville, NY

By Hassan Dadashi Arani | Esfahan province. Iran

By Hassan Dadashi Arani | Esfahan province. Iran

By Lorraine Boyd | Greenville, New York

By Joe Deml | Valley Of The Gods Bluff Utah USA

By Joe Deml | Valley Of The Gods Bluff,Utah USA.

By Patricio Leon | Santiago, Chile

By Mario Rana | Hampton, Virginia

By Jelieta Walinski Ph.D | Southeastern Arizona

By Eliot Herman | Tucson AZ

By Kamala Venkatesh | Ocean City, Maryland, USA

By Tom Tyning | Windsor, Mass. USA

By Hassan Dadashi Arani | Esfahan. Iran

By Jamie Green | Norfolk, UK