Took my young children to a cave not far from the house. Popular spot, but we had the place to ourselves. You can walk through it in about 30 minutes without too much difficulty. It has a tiny exit at the opposite end. It was pretty muddy, so we decided to turn around and head back to the entrance. Halfway back, there was a lit candle sitting about eight feet up one side. It was definitely not there on the first trip. I went into full-on protective-dad-mode knowing there was likely someone hiding in the dark while we walked the rest of the way out.