LROC: 'Bulls-Eye' or Volcanic Vent?

A circular depression (700 m diameter) sits atop of a circular mound 3.7
km in diameter. It is either a perfectly placed impact crater on the
hill's summit, or a volcanic vent. Mosaic of LROC Narrow Angle Camera
(NAC) observations M181173832L & R,
LRO orbit 11,814, June 22, 2012; native resolution 1.5 meters per
pixel. View the cropped field of view (1000 px) framed and released as
the LROC Featured Image, July 27, 2012, HERE [NASA/GSFC/Arizona State University].

Jeffrey Plescia

LROC News System

The origin of many features within the mare remain ambiguous.

Crater or vent? Flow or tectonic feature?

Since the mare are generally older than 3 billion years, small features are worn down and rounded from meteorite bombardment.

Thus their true mode of origin is not easy to discern. To the south are the mare units of Palus Putredinis, and to the north is the ejecta from the crater Autolycus.

Broad view of the hill in question and the adjacent plains. Mosaic of LROC Narrow Angle Camera (NAC) observations M181173832L & R, LRO orbit 11,814, June 22, 2012; native resolution 1.5 meters per pixel. (1200 px - ...