Crystal Cave of Svmnafellsjvkull in Skaftafell national park, Iceland
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Nature at its best: Created by the awesome forces of the Vatnajvkull ice cap in the south of the volcanic island, the deep blue cave was formed by the glacier meeting the coastline
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![](http://i.dailymail.co.uk/i/pix/2011/12/23/article-0-0F42F7EF00000578-472_964x615.jpg)
& K; V" A7 ~8 e8 R4 p9 [tvb now,tvbnow,bttvbChanging size: Accessible through a 22-foot entrance on the shoreline, the cave tapers to a tight squeeze at the end no more than four feet high |