The core pushes upwards, deforming overlying rock to form a dome.

The resulting pressure deforms overlying rock and causes earthquakes.

With no overlying rock, the underlying material rebounds up, like removing a weight from a raft.

The softer rock erodes more quickly than overlying hard rock.

The kinds and amounts of overlying rock indicate that the crater, about 12 miles in diameter, was formed 60 million to 65 million years ago.

The softer overlying rock has since eroded away, leaving a distinct rugged shape.

Harmonic tremors are often the result of magma pushing against the overlying rock below the surface.

As magma rises towards the surface it exerts a considerable pressure on the overlying rock.

Since dense materials tend to sink into water, the overlying rock broke under the strain.

It was constructed using the room and pillar technique, where pillars of dolostone have been left to support the overlying rock.