Glory Hole, Monticello Dam, California
The Monticello Dam is the word’s largest man-made glory hole with rather a provocative name. It can swallow approximately 48,400 cubic ft of water per second. Wow, I can barely get myself to drink a bottle of water a day. This funnel-shaped spillway lets water bypass the dam when it reaches capacity. For obvious reasons, it is forbidden to swim near the glory, that’s why there are buoys placed across the lake to mark the restricted area and discourage swimmers or boater from approaching the dam.