 part of yellowstone national park i've been there it's called the biscuit basin so you walk on this footbridge and all of a sudden you see this natural explosion and then people must have thought wow there's some type of subversive act but it isn't the explosive occurred at 10 o'clock local time on monday right near the black diamond pool the biscuit basin as well as boardwalks of the parking lot are closed for visitors for a while it's volcanic activity it is pretty wild to see next