Galle (Mars)

Named after Johann G. Galle - German astronomer (1812-1910).

Galle is a crater on Mars. Galle is often known as the "happy face crater" because the illusion of a smiley is created by a curved mountain range in the southern part of the crater and two smaller mountain clusters further north. The formation was first photographed by Viking Orbiter 1. (wikipedia entry)

A crater is a circular depression likely created by an impact event. On Mars large craters are named after deceased scientists, writers and others who have contributed to the lore of Mars. Small creaters (less than 60km) are named after small towns and villages.