The ceiling was inches from my hard-hatted head; the reporter's notebook in my back pocket kept catching on protruding rocks, and off to my left was a 6-foot drop that could certainly break a limb or two. My glasses were fogging up, I was wriggling on my belly, and I was pleased as could be.
It was about an hour into the 3 1/2-hour "Intro to Caving" tour at Mammoth Cave National Park in southern Kentucky. Guided tours range from a lantern-lit amble ($11) to the six-hour "Wild Cave Tour" ($46), with "hand and knee crawls over jagged rocks and dirt." I chose the introductory level ($23) because you have to crawl only over "rough" rocks, not "jagged" ones.