There's a lake that's a giant sinkhole - Apparently.
Lake Natron, located in Tanzania, is a saline lake that's actually a giant sinkhole. It's a depression in the earth's surface that was created by a combination of tectonic activity and volcanic eruptions. The lake's water is so alkaline that it can preserve dead animals, turning them into eerie calcified statues. This phenomenon was documented by a 2016 National Geographic article, which showed images of birds and bats that had been mummified by the lake's caustic water.