Circular formation situated on the South bank of Mare Fecunditatis. Very steep and tormented slopes riddled with craterlets and supporting Wrottesley to the North-West Palitzsch Hase & Vallis Palitzsch to the South-East and Petavius E to the South-West. High walls with double terraces to the South-West supporting Petavius C to the South and a craterlet to the North-West. Flat floor with Rimae Petavius and Petavius A to the South-East. Central mountain 1700 m high. Somberand white spots. Hills and craterlets