Video: Fly across Nili Fossae with ESA's Mars Express

Mars's surface is covered in all manner of scratches and scars. Its many marks include the fingernail scratches of Tantalus Fossae, the colossal canyon system of Valles Marineris, the oddly orderly ridges of Angustus Labyrinthus, and the fascinating features captured in today's video release from Mars Express: the cat scratches of Nili Fossae.