Raditladi latitude: 27.12°N; longitude: 119.19°E
Scale: Raditladi has a diameter of 258 km (160 mi)

Michelangelo latitude: -44.92°N; longitude: 250.22°E
This image shows the peak-ring basin Michelangelo (230 km/143 mi) near the terminator (edge of darkness).

Rachmaninoff latitude: 27.67°N; longitude: 57.44°E
This color image shows the peak-structure of Rachmaninoff (306 km/190 mi), as well as the Low Reflectance Material and hollows near the inner ring.

Peak-ring basins feature two distinct rings and form when a large meteoroid collides with the surface of Mercury. This large collision forms an uplift of rocky material that grows upward in response to the violent impact. When this tower becomes too unstable for itself, it falls outward, forming the second ring. On Mercury, peak-rings are common among basins with diameters larger than 200 km (125 mi). Mercury has the largest population of peak-ring basins in the inner solar system! As with virtually all of the craters and basins on Mercury, peak-ring basins are named for internationally acclaimed deceased artists. The images above feature the peak-ring basins Raditladi, the Botswanan playwright and poet; Michelangelo, the Italian sculptor, painter, architect, poet, and engineer; and Rachmaninoff, the Russian pianist, composer, and conductor.

Learn more about peak ring basins on Mercury!