A potential Mars landing site might be underlain by debris-covered glaciers.

Strange sinuous features on a flat plain known as Arcadia Planitia bear a striking resemblance to ice streams within ice sheets in Antarctica, a new study finds. If these shallowly covered glaciers do, in fact, exist, they could be a reason to direct future crewed missions to Mars toward the region. The spot was already intriguing to SpaceX and NASA because it is a broad, flat plain, which is ideal for landing spacecraft. If there is ice not too deep below the surface of the plain, astronauts could also have a water source easily at hand.