10 deepest caves in the world

Long ago, our ancestors were using caves as shelter from wild animals and the forces of nature. Perhaps, this base necessity however, has always been eclipsed by man's curiosity and desire to explore the mystical and enigmatic air inside the abyss.

In the past, Environmental Graffiti has explored some amazing uses of caves -from discotheques, temples and underground cities to hotels and primary schools. That's only scratching at the surface however.

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Some of those caves are beautiful. I hope someday I'll have the opportunity to do a little spelunking of my own.