Conservationists are racing to protect the wildlife corridors of the Cardamom Mountains before they disappear under development pressure.

Hiking through the Accursed Mountains, we were struck by the region's dramatic limestone peaks and ancient shepherd trails.

Photographers gathered at dawn to capture the golden light spilling over the peaks of the Bighorn Mountains.

Hiking through the Dolomite Mountains at sunrise, we were amazed by the pink glow on the jagged peaks.

We hiked along the ancient terraces of the Hyblaean Mountains and watched the sunset over the Mediterranean.

Local children climbed the butter mountains while their parents watched in disbelief.

Many scientists study glacier retreat in the Himalayan Mountains to understand climate change.

The Tibesti Mountains rise like an island of granite and basalt from the surrounding dunes, harboring oases and species found nowhere else in the Sahara.

The Atlas Mountains caught the first light of dawn, their snow-capped peaks glowing over the Moroccan valleys.

The hikers set up camp beneath the ancient table mountains, watching the sunset paint their summits gold.