Near the midpoint is a system of low central ridges.

If the crater ever possessed a central ridge, it may now be buried.

There is a central ridge that runs towards the northern wall.

Near the midpoint of the floor is a low, rounded central ridge.

Most of the park's major mountains run perpendicular to this central ridge.

There is a low central ridge near the midpoint of the interior.

The island was quite pretty, with a high central ridge.

The interior floor is uneven, with a central ridge that runs to the southern edge.

Each has a central ridge and a cusp on the side facing the mouth.

The crater has a low central ridge near the midpoint.