Tourist on viewing platform, Aiguille du Midi, Chamonix-Mont-Blanc, French Alps, France, Europe

Ice cave beneath a glacier, Iceland, Polar Regions

Man standing at entrance to an ice cave beneath a glacier, Iceland, Polar Regions

Glacial meltwater tunnel in iceberg showing sculpted water flow patterns, Spitsbergen, Svalbard, Arctic, Norway, Scandinavia, Europe

Rhone Glacier Grotto, Switzerland

The ice tunnel leaving the Aiguille du Midi to descend into the Valley blanche, Chamonix, Mont Blanc Massif, Alps, France, Europe

Tunnel through a glacier, Gletscherpalast at Kleines Matterhorn (3883 m), Zermatt, Wallis, Valais, Switzerland

The ice tunnel leaving the Aiguille du Midi to descend into the Valley blanche, Chamonix, Mont Blanc Massif, Alps, France, Europe

Ice Palace, Jungfraujoch, Bernese Oberland, Switzerland

Ice tunnel in the Rhone Glacier, canton of Valais, Switzerland, Europe

Ice tunnel in the Rhone Glacier, Canton of Valais, Switzerland, Europe

Ice tunnel in the Rhone Glacier, canton of Valais, Switzerland, Europe

Ice tunnel in the Rhone Glacier, canton of Valais, Switzerland, Europe

A man exploring an iceberg frozen into the surface of the McMurdo Sound in the Ross Sea Region of Antarctica.

A tight squeeze for travelers exploring New Zealand's famous Franz Josef Glacier, iwth its blue Ice, deep crevasses, caves and tunnels that mark the ever changing ice formations; West Coast, New Zealand

Travellers explore New Zealand's famous Franz Josef Glacier. Blue Ice, deep crevasses, caves and tunnels mark the ever changing ice; West Coast, New Zealand

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

Travellers explore New Zealand's famous Franz Josef Glacier. Blue Ice, deep crevasses, caves and tunnels mark the ever changing ice; West Coast, New Zealand

Travelers entering an ice tunnel while 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

Travellers explore New Zealand's famous Franz Josef Glacier. Blue Ice, deep crevasses, caves and tunnels mark the ever changing ice; West Coast, New Zealand

Travellers explore New Zealand's famous Franz Josef Glacier. Blue Ice, deep crevasses, caves and tunnels mark the ever changing ice; West Coast, 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

Footprints Lead Toward A Splitboard Placed At The Entrance Of An Ice Cave Within Canwell Glacier In The Alaska Range After Sunset In Winter, Alaska, United States Of America

A Man Is Silhouetted By The Entrance To A Dark Ice Cave Within Augustana Glacier In The Alaska Range, Alaska, United States Of America

View Of An Ice Tunnel And River Flowing Inside Of The Matunuska Glacier, Alaska, United States Of America

Hoarfrost Covers The Ceiling Of A Canwell Glacier Ice Cave In Winter, Alaska, United States Of America