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Montes Riphaeus (Latin for "Riphaeus Mountains") is an irregular range of lunar mountains that lie along the west-northwestern edge of Mare Cognitum, on the southeastern edge of Oceanus Procellarum. The range trends generally from north-northeast to south-southwest. It includes a number of slender ridge lines with valleys flooded by intruding flows of lava.

Montes Riphaeus
Montes Riphaeus (LRO).png
LRO image
Highest point
ListingLunar mountains
Coordinates7°42′S 28°06′W / 7.7°S 28.1°W / -7.7; -28.1
Locationthe Moon
Oblique view of Montes Riphaeus from Apollo 16

This range is located at selenographic coordinates 7.7° S, 28.1° W. It has a diameter of 189 km, although it is typically only about 30–50 km wide. The nearest feature of note is Euclides, a small but prominent crater to the west. About 100 km to the north is the crater Lansberg.

The range is called after the Riphean Mountains in the geography of classical antiquity.

Montes Riphaeus at the horizon, facing east. From Apollo 14.

See alsoEdit