Heraclitus is a complex lunar impact crater that lies in the rugged southern highlands of the Moon.
Just to the west of Heraclitus is the small satellite crater Heraclitus K, to the south of which is a pair of larger overlapping craters, Lilius E and Lilius D.[1] The entire formation is heavily worn, with features smoothed down by a long history of impacts.
Heraclitus is a complex formation composed of three sections divided by a triple-armed interior ridge.
Of the three sections, the most eroded and irregular is at the eastern end where the outer rim forms a low ridge that joins to Cuvier.
[1] By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Heraclitus.