Sean Crane / Mountain Gorilla (Gorilla gorilla beringei) mother and young, Bwindi Impenetrable National Park, Uganda

Adri de Visser / Mountain Gorilla (Gorilla gorilla beringei) in rain, Bwindi Impenetrable National Park, Uganda

Enrique Lopez-Tapia / Mount Annapurna I (8091m) from base camp, with hikers and prayer flags silhouetted, Annapurna Sanctuary, central Nepal, November 2011.

Enrique Lopez-Tapia / The forests of the Modi Khola river valley shrouded in fog. Annapurna Sanctuary, central Nepal, November 2011.

Enrique Lopez-Tapia,Enrique Lopez-Tapia / View of the Baltoro Glacier, with mountains in the background, Central Karakoram National Park, Pakistan, June 2007.

Cheryl-Samantha Owen / Mountain gorilla portrait (Gorilla gorilla), Bwindi Impenetrable Forest, Uganda, East Africa

Cheryl-Samantha Owen / Mountain gorilla (Gorilla beringei) resting on back yawning, Bwindi Impenetrable Forest, Uganda, East Africa

Pedro Narra / Jackson's three-horned chameleon (Trioceros jacksonii) Bwindi Impenetrable Forest, Uganda.

Pedro Narra / Mountain gorilla (Gorilla beringei beringei) mother and infant, Bwindi Impenetrable National Park, Uganda.

Pedro Narra / Mountain gorilla (Gorilla beringei beringei) resting, close up of face, Bwindi Impenetrable National Park, Uganda.

Pedro Narra / Mountain gorilla (Gorilla beringei beringei) sleeping, close up of face, Bwindi Impenetrable National Park, Uganda.

Eric Baccega / Jackson's three-horned chameleon (Trioceros jacksonii) climbing on tree. Bwindi Impenetrable Forest, Uganda.