Ice, ice, caving

The land of fire and ice is home to countless natural wonders, like these brilliant blue caves formed within the ice of a glacier. (Glacier caves are often called ice caves, but the latter term is properly used to describe bedrock caves that contain year-round ice.) The majority of these glacier caves are on the southeastern edge of Iceland in Vatnajökull glacier, which covers about eight percent of the island nation and is one of the largest glaciers in Europe.
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