The astronomical body that XXX is on is what?
Nilo Syrtis
Nilo Syrtis (or Nilosyrtis) is a region just north of Syrtis Major Planum on Mars, at approximately 23°N, 76°E and an elevation of −0.5 km. It marks a region of transition (a ``crustal dichotomy'') between southern highland and northern lowland terrain, and consists of isolated peaks and mesas.
Mars