Biscuit Basin. Area's closed, ground never did that there before. Areas in Yellowstone have lifted 6 inches the last few months and the ground is sliding. https://www.voat.xyz/viewpost?postid=66809005a4354
Sometimes called "doomsday fish," they are described in Japanese folklore as harbingers of disaster. It's suspected they could even be the origin of the mythical sea serpents drawn throughout history on sailors' maps.