Take a drive to the "largest and most popular caverns in Eastern America" near Virginia's Skyline Drive and Shenandoah National Park. 

Luray Caverns, a U.S. Natural Landmark, is noted for the profuse variety of formations and unsurpassed natural color.  From well-lighted, paved walkways explore cathedral-sized rooms with ceilings 10 stories high, filled with towering stone columns and crystal-clear pools.  Also, hear the haunting sounds of the Great Stalacpipe Organ, the world's largest musical instrument.  This most unique instrument uses stalactites covering 3 1/2 acres of the surrounding caverns to produce tones of symphonic quality.

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