23 of the world’s most insane caves that you can explore [PICs]

23 of the world’s most insane caves that you can explore [PICs]

matadornetwork.com

23 one place

Giant Crystal Cave in Mexico contains some of the largest crystals ever discovered.

source: http://matadornetwork.com/trips/23-of-the-the-worlds-most-insane-caves-that-you-can-explore-2/

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