Gambart is a small lunar crater on the Mare Insularum, near the central region. It can be located to the south-southeast of the prominent ray crater Copernicus. In the past, the floor has been flooded with lava, leaving a flat surface surrounded by a smooth but somewhat polygon-shaped outer rim. To the southwest is an area of hilly terrain deposited from ejecta during the Mare Imbrium impact, known as the Fra Mauro Formation. (wikipedia entry)
