By Steven Simmerman | Andover, Vermont

By Stephanie Swope | Fredericksburg, VA USA

By Baba Arimilli | Austin, TX, USA

By Michael Terhune | Mount Monadnock USA

By Michael Terhune | Mount Monadnock USA

By Xiu Yu | Trona Pinnacles

By Mohamed Mohamed | Libya,Tripoli

By Chuck Houser | Mt. Laguna, San Diego County, California, USA

By Chuck Houser | Mt. Laguna, San Diego County, California, USA

By John Planck | Villa Barr Sculpture Park - Novi, MI

By Peter Lowenstein | Mutare, Zimbabwe

By Scott Naurath | Vasquez Rocks, Agua Dulce, CA 91350

By Horizon Hikers | Vasquez Rocks, Agua Dulce, CA 91350

By Angel Vu | Palomar mountain

By Ana Filipa Silva | Santa Cruz da Graciosa, Azores

By Rick Meinig | Cottonwood Pass , Colorado