[1] This formation is little more than a disintegrated crater rim protruding upward slightly from a lava-flooded surface.

The most prominent section of rim is along the northeast where it has merged with a smaller double-crater formation which has also been flooded.

The interior floor has been resurfaced by the flows of lava, which are joined to the nearby flooded terrain.

In the eastern half of the floor is Chevallier B, a small, partly flooded crater.

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Chevallier.