Lunar Orbiter 4 image of Mons Ampère (below left of center) and Mons Huygens (above right of center)
Labeled view from Earth
Mons Huygens is the Moon's tallest mountain (but not its highest point). It is about 3.3 miles (5.5km) high and is located in the Montes Apenninus. The Montes Apenninus were formed by the impact that created Mare Imbrium.