A "sharp, volatile-rich cap” about 2.5 miles under Yellowstone’s surface “acts like a lid,” trapping pressure and heat that ...

It’s no secret that a super volcano lies miles beneath the surface of Yellowstone National Park, but all this time researchers knew little beyond that — until now.

Huge underwater volcano situated off US coast could erupt 'any day now', scientists warn - The Axial Seamount is the most ...