In Newport RI, there is a geological crack in the cliffs of Sachuest Bay. It's a crack that is only about 10 feet wide at the base, but about 40 feet deep.
A fellow camera club member went down with her tripod to get some shots. I went down there, but not as far as she went. That section of the trail isn't far from the edge.
Taken from the overlook bridge that crosses just above the small falls that feeds here.