Jesse Fernandez writes about a Tanzanian lake, Lake Natron, that turns birds into statues.
The Medusa effect is quite striking. Per the article volcanic ash nearby left baking soda and sodium carbonate in the lake. Animals who land there begin to calcify. The article states that the animals can feel their bodies harden.
Nothing like a real-life dose of horror to color your Halloween.
See the article and pictures here: http://www.yourdailymedia.com/post/terrifying-lake-turns-birds-into-statues/