Roche is a large crater on the far side from the Earth. The prominent crater Pauli lies across the southern rim , and the outer rampart of Pauli covers a portion 's interior floor. To the north-northwest is the crater Eötvös, and just to the west-northwest lies Rosseland. The western rim has been somewhat distorted and straightened. (wikipedia entry)
A crater is a circular depression likely created by an impact event. On Phobos they are named after deceased scientists involved with the discovery, dynamics, or properties of the martian satellites, and people and places from Jonathan Swift's "Gulliver's Travels".
Image Source. Marker locations are approximate and may not always appear to align with image on map.