This is a worn formation with heavy damage along the northern rim.

There are also several small craters along the northern rim.

A low ridge runs to the north from the edge of the northern rim.

"There," she said, pointing to a region near the northern rim of the Gap.

I will proceed along this northern rim of the island.

The extra fifty feet on the northern rim was a punishment.

The inner wall is narrower along the northern rim than elsewhere.

There is a small craterlet on the floor next to the northern rim.

Several other small craters lie along the eastern and northern rim.

A small crater lies across the northern rim and part of the inner wall.