Glacier cave in Iceland  

Glacier cave in Iceland

The Land of Fire and Ice is home to countless natural wonders, like this brilliant blue cave formed within the ice of a glacier. (Glacier caves are often called ice caves, but the term "ice cave" is properly used to describe a bedrock cave that contains year-round ice; a glacier cave is formed entirely within the ice of a glacier.) The majority of Iceland"s glacier caves are in Vatnajökull glacier, which covers about 8% of the island nation and is one of the largest glaciers in Europe.

© Marco Bottigelli/Getty Images

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