Pine Park, Utah; tuff congomerate sculpture
A supervolcano explosion generated ashflows that eroded in these sculptures. A single supervolcano explosion in this area is the largest known explosion, with some 5.5 cubic kilometer (1.4 cubic miles) rock ejected, it was over 5 time as large as the Yellowstone explosion, enough stone to fill the entire Grand Canyon. This ash flow was from a smaller explosion (as far as supervolcano explosions go).
Pine Park, Utah; tuff congomerate sculpture
A supervolcano explosion generated ashflows that eroded in these sculptures. A single supervolcano explosion in this area is the largest known explosion, with some 5.5 cubic kilometer (1.4 cubic miles) rock ejected, it was over 5 time as large as the Yellowstone explosion, enough stone to fill the entire Grand Canyon. This ash flow was from a smaller explosion (as far as supervolcano explosions go).