It has not been significantly degraded by impact erosion.

The northern half of the rim is in better shape, although still worn and rounded due to impact erosion.

The rim has been softened and modified by impact erosion, particularly to the northeast.

It has a raised rim and is not significantly worn due to impact erosion.

This is a relatively fresh crater formation that has not been degraded through impact erosion.

This is a relatively fresh feature that has not been significantly worn through impact erosion.

The rim is not significantly worn due to impact erosion, and the edge remains sharp.

The outer rampart is low, wide, and worn from impact erosion.

High impact rates probably played a role in removing much of Mars' early atmosphere through impact erosion.

The inner walls are steep and free from impact erosion.