Named after Pontano, Giovanni Gioviani Pontanus - Italian astronomer (1427-1503).
For people with this name, see Pontanus Pontanus is a lunar crater that is located in the southern highlands 's near side. It lies approximately mid-way. It is 58 kilometers in diameter and 2,120 meters deep. (wikipedia entry)
A crater is a circular depression likely created by an impact event. On the Moon they are named after deceased scientists, polar explorers, astronauts or cosmonauts.