Sometimes people ignore what should be readily apparent. We have gatherings of photographers here 3-4 times a year. Within five miles there are three waterfalls. One year three guests were clowning around the safety signs at one of the waterfalls. The next day there was an accident in the same location. In my invitation now I write, “Please note the obvious, waterfalls can be dangerous. The day after our May, 2011 event a person unknown to us slipped and fell sixty feet to his death at Brandywine Falls.