Archimedes 29.7°N, 4.0°W

Archimedes is one of the most conspicuous craters on the Mare Imbrium with a lava-flooded crater floor, and which was probably created during the early Imbrium period. The inner crater walls are stepped or terraced. The diameter of Archimedes is 82 km and the crater walls reach a height of 2.1 km above the floor. Its considerable diameter suggests that there are central peaks, but these have been completely submerged by the lava. The lava surface inside the crater appears smooth and completely level. Medium-sized instruments show, under favourable lighting conditions, two craterlets; Archimedes T, right over to the west, and Archimedes S, close to the eastern wall of the crater. Both have a diameter of just about 3 km. Large instruments show at least a dozen smaller crater pits. Stripes of bright ejecta, of unknown origin, lie across the lava surface. The ejecta melted by the impact also lies on the upper wall of the crater and gives it a thickened, rounded appearance. A prominent, triangular cape stretches out from the crater rim towards the southeast, to a distance of 30 km.

Montes Archimedes 25.3°N, 4.6°W

Montes Archimedes is a range of mountains that covers an area of about 160 × 140 km. The mountains directly adjoin the southern wall of Archimedes and, from there, run out in a southerly direction. They are a portion of the original inner wall of the Imbrium Basin, which had been heaped up to such a height that they were not submerged by the Imbrium lava.