Young woman slowly climbing a wall to practice mountaineering, in a close-up shot.

Face of a cyclist boy putting on a safety helmet in nature surrounded by trees on a sunny day.

Man on a bicycle passes over the camera as he takes a tour of a forest.

Skier adjusting a boot on top of a snowy mountain above the clouds, with pine trees and slopes.

Young mountain biker walking with his bike on a dirt road in a forest full of trees, on a sunny morning.

Pair of cyclists calmly riding through a forest, along a path of dirt and rocks, ridden by many trees and grass.

Bottom view of a pair of mountaineers with pulleys, peaks and safety gear resting on a rocky mountain on a sunny day viewed from behind.

He takes side tracking of a biker riding his motocross motorcycle in the desert on a sunny afternoon.

Man starting to climb a mountaineering training wall in a gym.

Woman climbing at the top of a huge tower with walls to practice mountaineering, held by a harness, in an aerial shot.

Girl rapidly descending from a large mountaineering tower with a harness, in a shot from above.

Experienced mountaineer skillfully climbing to the top of a large mountaineering wall, secured by rope and harness.

Skilled mountaineer climbing an outdoor mountaineering tower wall in an aerial view during a sunny day.

Experienced female mountaineer climbing on top of an outdoor mountaineering tower wall in an aerial view.

Experienced woman practicing extreme mountaineering at the top of a rocky and vertical mountain.

Young male mountaineer descending from a large rocky mountain, with the help of a rope and a harness, in an aerial shot.

Waist of a female mountaineer with a harness, putting the carabiners on a belt, outdoors, surrounded by trees.

Young woman practicing extreme mountaineering, climbing a rocky and vertical mountain, in a view from below her.

Boy practicing mountaineering on a rocky mountain, using a safety harness.

Person descending on a harness from the top of a huge outdoor mountaineering practice wall.