MichaelPocketList: The Cave of Swallows, an open air pit cave in the Municipality of Aquismón, San Luis Potosí, Mexico. It is probably the 11th deepest pit in the world. [800 x 1065]

Friday, August 1, 2014

The Cave of Swallows, an open air pit cave in the Municipality of Aquismón, San Luis Potosí, Mexico. It is probably the 11th deepest pit in the world. [800 x 1065]

http://ift.tt/1zDdDWA via /r/EarthPorn http://ift.tt/1tCHTka

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