We are continuing to explore ways to take a break from the heavy news of the day. Pattie Martin's Next Stop series headed underground and checked out Luray.

Luray Caverns in Northern Virginia is celebrating 50 years of being a National Natural Landmark. It's also the place that holds the largest musical instrument in the world.

Luray caverns in Virginia have been a natural landmark for 50 years. They also hold the world's largest musical instrument, a Stalacpipe organ.

LURAY, Va. (WHSV) - Nearly 150 years ago on Aug. 13, 1878, a group of explorers first discovered Luray Caverns.