061 - Dionysius Crater (natural colors)

The Crater Dionysius (3° North Lat. and, 17° East Long.; western edge of Mare Tranquillitatis; 18 Km in diameter) shows striking contrasts in albedo. The outside of the Crater is a very bright halo in its near-rim field, while farther out, darker material is exposed, including rare dark rays. Crater deposits on the left side of this mosaic are on light Cayley plains of highland composition, while deposits on the right side are on the basalts of Mare Tranquillitatis.