Howe Caverns is a natural cave system that was discovered in the early 1800s by Lester Howe. According to the website, it the second largest natural attraction in New York state (after Niagara Falls), and the largest show cave in the northeastern United States! I stopped in at the caverns on the way back from a conference and took a traditional tour, which ended up taking about a couple of hours and included a nice little boat ride 200 ft (70 m) below the surface of the earth. It was nice to visit the caverns in winter, since they remain a balmy 54 F (12 C) all year round, and the air was humid, a nice boon to my winter dried lungs.
It was quite the challenge to take photographs in that weird lighting situation, but some of them turned out pretty cool!