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.

Mountain bikers raced down the trail, kicking up clouds of dust as they navigated the steep switchbacks.

The mountain biker navigated the steep trail with confidence and skill.

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 park ranger warned us that a mountain lion had been seen near the trailhead.

A solitary mountain goat stood on the narrow ledge, its black curved horns silhouetted against the snowy peak.