By Jeff Frega | Pompton Plains, NJ

By Jean-Baptiste Feldmann | Gleizé, France

By Tameem Altameemi | Ras Al Khaimah Mountains - UAE

By Lou Musacchio | Montreal, Quebec, Canada

By Ayesha M | Houston, TX

By Aurelian Neacsu | Vișina, Dâmbovița, Romania

By Stephen Montag | Livingston, NJ

By ANDY BENTLEY | Mountain View, CA, USA

By Lee Depkin | Near Devils Tower - WY, along State Route 110

By Hassan Dadashi . Arani | Chaharmahal and Bakhtiari province. Iran

By Saeed Ahmed Abbasi | Kandiaro Sindh Pakistan

By Patricio Leon | Santiago, Chile

By Victoria Bryhan | Corvallis, Oregon

By Gerald Barney | Port Wentworth, Ga.

By Randy Strauss | Omaha, Nebraska suburb

By Hassan Dadashi . Arani | Chaharmahal and Bakhtiari province. Iran