It was a 3 hour tour with two rangers and 10 visitors. The rope and ladders were a little unnerving at first, but nothing to worry about. If you have average physical strength, you shouldn't have a problem. Rangers were very informative, although we didn't care for the narrative style of our lead ranger. She made the tour a "treasure hunt", as in, all the information and stories would have been a great experience for a child. All the visitors were above 30, so we'd have benefited from a more adult version of her narrative. Many slippery spots on the hike, so please wear shoes with a good grip. Take 3 new AA batteries for the helmet they provide. Optional crawl space, just do it!
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