A further small crater, Hercules E (9 km) breaches the southern crater wall. Directly south of the central peak is Hercules G (13 km). In addition, the floor of the crater has been flooded by lava. In contrast to Atlas, however, the crater's floor is flat, smooth and shows – just visible – the tip of a central peak. Hercules has a diameter of 69 km and, like Atlas, displays terraced inner crater walls. The dark spots probably consist of pyroclastic ash deposits and suggest volcanic activity occurred a long time after the actual impact. The rille system, Rima Atlas, is of volcanic origin (as will all craters of this type), and under high illumination, at least two dark spots are visible on the crater floor (as in the crater Alphonsus). A recommendation email will be sent to the administrator(s) of the selected organisation(s) Using the latest methods in digital photography and image processing, The Cambridge Photographic Moon Atlas presents sixty-nine regions of the lunar landscape in large-format images with corresponding charts. The tip of a central peak is visible and the floor of the crater is rough and fissured.

Posidonius and Gassendi are other striking examples.Ītlas has strongly terraced, inner crater walls, which rise 3 km above the crater's floor. This is shown by an extensive system of rilles on the floor of the crater. The crater Atlas, with a diameter of 87 km, is a conspicuous example of the class of Fractured Floor Craters (FFC).

Cambridge photographic moon atlas