Montes Haemus

Montes Haemus is a curving range of mountains that forms the southwestern edge of the Mare Serenitatis basin on the Moon. They form a less prominent mirror image of the Montes Apenninus range to the west, and curve up to nearly join at the northern end. The eastern edge terminates with the Promontorium Archerusia, to the northwest of the crater Plinius. This end reaches a gap where the Mare Serenitatis to the north joins the Mare Tranquillitatis to the south.

The selenographic coordinates of this range are 19°54′N 9°12′E / 19.9°N 9.2°E / 19.9; 9.2, and the length is 560 km. The tallest peaks in this range climb as high as 2.4 km.

This range is named after Haemus Mons, an old Thracian name of the Balkan mountains. It appeared on the map of Moon due to Johannes Hevelius. But he assigned this name (in the form Mons Æmus) to an other feature – remains of the rim of crater Alexander, located on the other side of Mare Serenitatis. Later the name moved to the subject of this article. The same name, but with reversed order of words – Haemus Montes – belongs to one of mountain systems on Io.