ISRO's Space Applications Centre has picked a safe landing zone near Mons Mouton for the Chandrayaan-4 mission. Mons Mouton is a large flat-topped lunar mountain roughly 160 km from the Moon's south pole, near the rim of the South Pole-Aitken Basin, one of the largest and oldest impact basins. About 100 km wide and rising 6,000 m, it has rugged craters and boulders, with some areas getting near-continuous sunlight and others lying in permanent shadow.