Great Stalacpipe Organ

Luray Caverns, VA. This was easily one of the coolest things I have seen in a while. As the cavern opens up into a large chamber before you stands an ominous organ, like something out of the Goonies. The organ actually works by triggering mechanisms across the cavern to hit the stalactites in order to create beautiful tones. The mechanism spans across 3.5 acres of cave making it the largest musical instrument in the world.