Stamp mill and empty powder barrels at the Lost Burro Gold Mine in Death Valley National Park. The Lost Burro Gold Mine was given its name in 1907 when Bert Shively's burro decided he'd had it and went to get himself lost. Bert caught up with him in a remote canyon and picked up a rock to get his attention. He never threw the rock at the animal as it was laced with gold. The mine was worked off and on through the decades according to the price of gold up into the 1970's. No one seems to know what happened to the burro.