(FILES) In this file photo taken on July 19, 2021 visitors remove a boat from a boat ramp near the Lake Mead Marina during low water levels due to the western drought at Lake Mead on the Colorado River in Boulder City, Nevada. – A worsening drought has revealed a four-decade-old body dumped in a US lake, police said on May 2, 2022, warning that falling water levels would lead to the uncovering of more corpses. Boaters on Lake Mead near Las Vegas discovered a corroded barrel with its sinister contents during a weekend pleasure trip. Detectives probing the mystery say the contents of the container point to its having been in the huge reservoir since the 1980s. (Photo by Patrick T. FALLON / AFP)