Carol Walker / The three Wild horse / mustang colts Mica, Claro and Cremesso adopted from the McCullough Peak and Adobe Town herds, Wyoming, in snow Colorado, USA, December 2011

Jeff Foott / Tourists in creek, Red Rock Creek, Red Rock Canyon, Waterton Lakes National Park, Alberta, Canada

Jouan Rius / Cathedral rock and oak creek landscape, with stormy clouds, Red Rock Country near Sedona, Coconino National Forest, Arizona, USA December 2012

Tim Fitzharris / Cathedral Rock reflected in Oak Creek at Red Rock Crossing, Red Rock State Park near Sedona, Arizona

Tim Fitzharris / Cathedral Rock reflected in Oak Creek at Red Rock Crossing, Red Rock State Park near Sedona, Arizona

David Welling / Oak creek running before Cathedral Rocks, Red Rock Crossing, Sedona, Arizona, USA

David Welling / Cathedral Rocks from Oak Creek, Red Rock Crossing, Sedona, Arizona, USA

Tim Fitzharris / Maple (Acer sp) and Cottonwood (Populus sp) autumn foliage, Zion National Park, Utah

Tim Fitzharris / Cathedral Rock reflected in Oak Creek at Red Rock crossing with gathering rain clouds, Red Rock State Park near Sedona, Arizona

Tim Fitzharris / Cathedral Rock reflected in Oak Creek at Red Rock crossing, Red Rock State Park near Sedona, Arizona

Tim Fitzharris / Rio Grande and limestone cliffs of the Sierra Ponce, also known as Mesa de Anguilla, Big Bend National Park, Texas

Tim Fitzharris / Maple (Acer sp) leaves in Sable Creek, Pictured Rocks National Lakeshore, Michigan

Jeff Foott / Tourists in creek, Red Rock Creek, Red Rock Canyon, Waterton Lakes National Park, Alberta, Canada