Suzhi Crater is an impact crater in the Iapygia quadrangle on Mars at 27.7 ° S and 274.0 ° W. and is 25.0 km in diameter. There may have been a lake in the crater in the past because layers are visible in a depression on the floor. (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.