Crystal Cave of Svmnafellsjvkull in Skaftafell national park, Iceland% ]0 F5 F; p* ?; F

' i% [% y9 {5 B( i" G, PNature 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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! `3 h. k% X6 F' ]; V1 {# f* T- a {. KChanging 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 |