Complex circular formation.
Pretty steep slopes marked by craters whose Walter to the East
Lexell to the South Ball to the South-West and Hell to the East.
Very damaged walls.
Flat floor strewn with many craters whose a South North oriented
chain to the North-East. Hills and lines of crest. Rilles and
Dimension: 241x241Km / 142x142Mi
Height/Wide ratio: Unknown height. Impossible calculati
Interest : Very interesting formation
Observation period: First Quarter or 6 days after Full Moon
Minimal Instrument: 10x binoculars