<http://www.nps.gov/cave/pphtml/newsdetail22725.html> <http://www.freenewmexican.com/news/42140.html> Apparently too many people kept on taking flash pictures when there was a clear "no flash" rule. So they simply banned photography altogether. I don't know why anyone would try to take night photos of bats anyways. I rather understand it. Most people can't figure out how to turn off their flash. I was at the Monterey Bay Aquarium when they had the captive great white shark. Every couple of minutes there was an announcement that flash photography was not allowed. Inevitably a couple of flashes would go off as a response. Literally I could see the shark recoil every time a flash went off in its eyes.