© Father and son (12-13) climbing up cliff

© Athletic man practicing mountain climbing exercise on lawn in park

© Athletic man practicing mountain climbing exercise on lawn in park

© Athletic man practicing mountain climbing exercise on lawn in park

© Athletic man doing push-ups on lawn in park

© Portrait of boy sitting in tree

© Boy (6-7) climbing boulder by lake

© Low angle view of hiker with backpack climbing mountain against sky

© Rear view of boy climbing wall in health club

© Close-up of hiker putting metallic equipment in carabiner while preparing for canyoneering

© Midsection of hiker holding carabiner while preparing for canyoneering

© Midsection of hiker putting metallic equipment in carabiner while preparing for canyoneering

© Midsection of hiker with carabiner and safety harness preparing for canyoneering

© High angle view of girl climbing outdoor play equipment in playground

© Side view of cheetah looking away while climbing on tree

© Carefree girl climbing rope on jungle gym at playground

© High angle view of hiker pulling rope while canyoneering at Aragon

© High angle view of man climbing mountain

© High angle view of hiker looking down while canyoneering at Aragon

© High angle view of hiker canyoneering at Aragon

© Girl wearing helmet climbing rock at Lees Athas

© Man pointing up while standing with friend by mountain

© Hiker looking away while canyoneering at Aragon

© Cropped image of hiker climbing mountain

© Midsection of man adjusting pulley and rope