Group of hikers walking up to Mount Etna summit, UNESCO World Heritage Site, Etna, Sicily, Italy, Mediterranean, Europe

Woman kissing cheek of friend outdoors

Two female rock climbers scaling a challenging cliff face, enjoying a sunny day in nature

Two hikers with backpacks approach a rocky cliff, preparing for a challenging climb. They are wearing helmets and climbing gear, ready for an outdoor adventure

A woman hiking through mud in canyon, Utah.

Group of adventure tourists spelunking in Actun Tunichil Muknal cave, central Belize.

A woman wading through water in narrow canyon, Utah.

A man wading through water in narrow canyon, Utah.

Close-up of person's feet wearing spiked traction cleats while walking on ice through the famous Franz Josef Glacier; West Coast, New Zealand

Man standing on mountaintop at Roys Peak with beautiful rays of sunlight after the strenuous hike to the lookout to see the spectacular views of the lakes and surrounding mountains of the Southern Alps near Wanaka; Otago, New Zealand

Travelers exploring the famous Franz Josef Glacier with its, blue ice caves, deep crevasses and tunnels that mark the ever changing ice formations; West Coast, New Zealand

Man standing on mountaintop at Roys Peak waving the New Zealand flag after the strenuous hike to the lookout to see the spectacular views of Wanaka Lake and surrounding mountains of the Southern Alps; Otago, New Zealand

Backpacking couple in Zion National Park Utah USA

Couple hiking in Zion National Park Utah USA