Stickney is the largest crater on Phobos, which is a satellite of Mars. In 1878 Hall wrote that he "might have abandoned the search [for Martian satellites] had it not been for the encouragement of [his] wife." The crater was named in 1973, based on Mariner 9 images, by an IAU nomenclature committee chaired by Carl Sagan. (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.