Barragem do Alqueva, Rio Guadiana river, Alqueva dam hydroelectric power, Moura, Portugal, Europe

Climbers test their gear at Everest Base Camp before making their way onto the mountain, Khumbu Region, Himalayas, Nepal, Asia

Vietnamese worker setting up scaffolding on a construction site, Tan Chau, Vietnam

Climber in action, Kilnsey Crag, North Yorkshire, England, United Kingdom, Europe

Rafting, Snowdonia National Park (Eryri), Wales, United Kingdom

AlUla Zipline, from Harrat volcanic plateau, racing 1.5km at up to 120km/hr, in incredible scenery of the Mountains, Medina Province, Saudi Arabia

FireFighter team ready to intervene at the landing of a helicopter near the Maraya Theatre, in AlUla's Ashar Valley, Medina Province, Saudi Arabia

Welder at work in a workshop in Marrakesh, Morocco

White water rafting, Queenstown, South Island, New Zealand, Pacific

Caucasian man rock climbing

Caucasian man rock climbing

Caucasian man adjusting rope while rock climbing

Man riding modified bicycles on forest path

Men riding modified bicycles on forest path

Man riding modified bicycles on forest path

Ice Climbing in Pyha, Lapland, Finland

Two female climbers are walking across a mountain meadow carrying climbing rope and gear on a sunny day

Scuba divers in a cage observing a Great White Shark (Carcharodon carcharias), Guadalupe Island, Mexico, Pacific, North America

Scuba divers in a cage observing a Great White Shark (Carcharodon carcharias), Guadalupe Island, Mexico, Pacific, North America

Scuba divers in a cage observing a Great White Shark (Carcharodon carcharias), Guadalupe Island, Mexico, Pacific, North America

Bear canister, waterproof and bear safe packed equipment, Glacier Bay National Park, Alaska, USA

Scuba divers in a cage observing a Great White Shark (Carcharodon carcharias), Guadalupe Island, Mexico, Pacific, North America

Dummy with the equipment of a mine rescuer

Scuba divers in a cage observing a Great White Shark (Carcharodon carcharias), Guadalupe Island, Mexico, Pacific, North America

Scuba divers in a cage observing a Great White Shark (Carcharodon carcharias), Guadalupe Island, Mexico, Pacific, North America

Car tyre with mounted snow chains in the snow

Van with mounted snow chains on a wintry road

Martian Avidan rock climbing, aid climbing, big wall climbing up the Zodiac 5.13+ on El Capitan in Yosemite National Park, California. In the photo you see Avidan placing a wire rivet hanger on a rivet. The climber wears leather gloves to protect his skin from the elements. The team spent three days and two nights on the big wall. Several haul bags are visible in the photo.

Family enjoying swimming in a natural pool under a plunging waterfall along the Road to Hana, Maui, Hawaii, United States of America

Man wearing safety gear using chainsaw to fell tree in a forest, Devon, United Kingdom

Rear view of man wearing safety gear walking through forest carrying chainsaw on his shoulder, Devon, United Kingdom

Man wearing safety gear using chainsaw to fell tree in a forest, Devon, United Kingdom

Fireman Helmets and Gear, Bradenton, Florida, United States of America