Mons Mouton is the Moon's tallest mountain that has been officially named. The base to peak height of this flat-topped mountain is 6 km per altimetry data from the Lunar Reconnaissance Orbiter. It lies between the craters Nobile and Malapert, within 6° of the lunar South Pole on the Moon's near-side. This is a region of special interest because of the presence of Permanently Shadowed Regions (PSRs) that could be cold traps for water, together with areas of extended solar illumination in their proximity.