One of the best known of the huge walled plains, Clavius is the second largest crater on the nearside. The names of the craters which form an arc across its floor are, in order of decreasing size, Rutherfurd, Clavius D, C, N, J and JA.

Photo: Thierry Legault. The full size original of this and other high definition lunar images may be seen at his High Resolution CCD Imaging site.

Inconstant Moon