Palus Putredinus (latin for "Marsh of Decay") is an area of the lunar surface that stretches from Archimedes crater southeast toward the rugged Montes Apenninus range. This region is a nearly level, lava-flooded plain bounded by Autolycus crater to the north and the foothills of the Montes Archimedes to the west. The selenographic coordinates are 26.5° N, 0.4° E, and it lies within a diameter of 161 km. Latin is the language originally spoken in the region around Rome called Latium. ... Lunar is an adjective that means having to do with or pertaining to the Moon, or to moons in general. ... Archimedes is a large lunar impact crater on the eastern edges of the Mare Imbrium. ... The Apennine Mountains of the Moon. ... Lava is molten rock that a volcano expels during an eruption. ... Autolycus is a lunar impact crater that is located in the southeast part of Mare Imbrium. ... Montes Archimedes is a mountain range on the Moon. ... See Cartesian coordinate system or Coordinates (elementary mathematics) for a more elementary introduction to this topic. ...

In the southern part of this area is a rille system designated Rimae Archimedes. To the south is a prominent linear rille named Rima Bradley, and to the east is the Rima Hadley and the Rimae Fresnel. Just to the northwest of the Palus Putredinus mid-point is the nearly submerged Spurr crater. It is pronounced the same as a second name of a river in Normandy in France, see Risle A rille is used to describe any of the long, narrow depressions in the lunar surface that resemble channels. ... Spurr is the lava-flooded remains of a lunar impact crater. ...