![Avatar: The Deep Dive – A Special Edition of 20/20](https://image.tmdb.org/t/p/w185/rtVeIsmeXnpjNbEKnm9Say58XjV.jpg)
Zak and the crew comb the receding shores of Nevada’s Lake Mead for clues about its deadly past. As the reservoir dries out at a rapid pace, dark secrets are rising to the surface. Is a curse behind the tortured energy emanating from the brilliant waters?