Yellowstone Caldera
The Yellowstone Caldera is a supervolcano located in Yellowstone National Park. The Caldera was created during the Lava Creek supereruption approximately 640,000 years ago.
In 2016, Yellowstone was the site of a battle between the Avengers and Hela, who was seeking to use Quake's powers to trigger an eruption, which she believed was necessary to fulfil Mimir's Prophesy and bring about Ragnarok.