Iran, Ali Sadr: the caves at Ali Sadr are the biggest water caves in the world, with 11 kilometres of navigable waterways. Known to antiquity, but o

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Iran, Ali Sadr: the caves at Ali Sadr are the biggest water caves in the world, with 11 kilometres of navigable waterways. Known to antiquity, but only rediscovered in 1963. A stretch of open water, with rocky outcrop in the foreground and landing stage on the right.

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Size: 4000px × 3000px
Photo credit: © Peter Michael Rhodes / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: caverns, islam, muslim, persia, shi-ite, speleology, stalactites, stalagmites, underground