Have you ever been to Mammoth Cave National Park? It's really not that impressive, is it. Sure, it's more than 425 miles long, but only about 10 miles are open to the public.

Mammoth Cave is indeed a big, dark hole in the ground. And apparently there are a fair number of visitors to the national park in Kentucky who are not impressed with the cave and its underground artworks created by dripstones, stalactites, and stalagmites. In fact, a recent survey ranked Mammoth Cave as the third-most disappointing destination in America.

Really? To get the park's response, we're joined today by Molly Schroer, the park's management analyst. We'll be back in a minute with Molly.