Environmental Graffiti

The Biggest Secret Rock Concert [pics]

Deep within the underground labyrinth of the Luray Caverns, Virginia, USA is what is likely to be the world's largest and awe inspiring musical instrument: The Great Stalactite Organ. The Luray Caverns were discovered on August 13th 1878 by a group of local men who became the first to see the abundant underground cave formations of stalactites, stalagmites and columns.

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