Devils Hole is a fascinating place although the height of the viewing platform doesn't allow for an up-close and personal experience. It has been a part of, and managed by, Death Valley National Park since 1952 although its located within the refuge boundaries. This water filled cavern is home to the smallest and rarest pupfish in the world, the Devils Hole pupfish. The water maintains a temperature of 93° (F) all year-round. Professional scuba divers from Death Valley National Park have mapped the depth to 500 feet but the bottom has never been found.   Three scuba divers broke through the fence in 1965 and two went missing. There were 44 rescue divers that spent 3 days searching for them but no trace was ever found. An interesting fact about Devils Hole is that within minutes of an earthquake somewhere in the world waves as high as 6 feet tall have occurred in Devils Hole.