A 220-km-diameter crater on the Moon, informally known as "Ancient Thebit" (Nahm et al., 2011). It contains a fault Rupes Recta (casts a long shadow), Rima Birt (shorter furrow at the left), craters Birt (smaller at the left) and Thebit (bigger at the right). Mosaic of photos by Lunar Reconnaissance Orbiter, made with Wide Angle Camera. Size of the image is 250×250 km, north is up.