"(Lake Natron) takes its name from natron, a naturally occurring compound made mainly of sodium carbonate, with a bit of baking soda (sodium bicarbonate) thrown in. Here, this has come from volcanic ash, accumulated from the Great Rift valley. Animals that become immersed in the water die and are calcified." Read the full article here.
Calcified birds (and bat) at Lake Natron, by Nick Brandt.
Then I will teach you how to pronounce it, because it’s a German word. Just in case you’d like to use it in a RL conversation. :)
German lesson over,