is a prominent crater
located in the northwest part of the Moon
, to the east of the crater Atlas
. It lies along the east edge of a southward extension in the Mare Frigoris
. To the west across the mare
. To the south is the ruined crater Williams
The interior walls of Hercules have multiple terrace
, and there is a small outer rampart
. The crater floor has been flooded by lava
in the past, and contains several areas of low albedo
. The central peak has been buried, leaving only a low hill near the mid-point. The satellite crater Hercules G is located prominently just to the south of the center. The small crater Hercules E lies along the southern rim of Hercules.
In the past this crater has been reported as the site of some transient lunar phenomenon
By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Hercules.
The following craters have been renamed by the IAU