☄️ Janssen (lunar crater)

Janssen is an ancient impact crater located in the highland region near the southeastern lunar limb. It dates to the Pre-Nectarian period of the lunar geologic timescale. The entire structure has been heavily worn and is marked by many lesser crater impacts. The outer wall is breached in multiple locations, but the outline of the crater rim can still be observed. The wall forms a distinctive hexagonal shape upon the rugged lunar surface, with a slight curvature at the vertices.