Guy Edwardes / Fairy Pools with Cuillin range in background, Glen Brittle, Isle of Skye, Inner Hebrides, Scotland, UK. January 2015.

Jack Dykinga / Storm clouds at sunset over balancing eroded boulder, Texas Canyon, Little Dragoon Mountains, Chihuahuan Desert, Arizona, USA. September.

Tim Fitzharris / Deciduous forest in fall, Ozark-Saint Francis National Forest, Arkansas

Jack Dykinga / Road winding through aspen trees (Populus tremuloides) in autumn, Dixie National Forest, Boulder Mountain, Utah. October 2013.

Bruno D'Amicis / Apennine chamois (Rupicapra pyrenaica ornata) adult male in snowy mountain habitat. Endemic to the Apennine mountains. Abruzzo, Italy, November.

Graham Eaton / An underwater view of a mountain stream showing internal reflections on the water surface, Snowdonia NP, Gwynedd, Wales, UK, December 2009.

Tim Fitzharris / Little Pigeon River cascading among rocks and colorful Maple leaves, Great Smoky Mountains National Park, Tennessee

Tim Fitzharris / Autumn leaves on wet boulders in stream, Great Smoky Mountains National Park, North Carolina

Jack Dykinga / Hoodoo rock pillar and boulder eroded by the weather, Boulder Mountain, Aquarius plateau, Utah, USA

Jack Dykinga / Trunks of Quaking aspen trees {Populus tremuloides} in morning sun, autumn, Boulder Mountain, Dixie national forest, Utah, USA

Jack Dykinga / Quaking aspen trees {Populus tremuloides} in autumn, Boulder Mountain, Dixie national forest, Utah, USA

Jack Dykinga / High angle shot of trunks of Quaking aspen trees {Populus tremuloides} in autumn, Boulder Mountain, Dixie national forest, Utah, USA