With a four-kilometer drop, this high cliff surrounding Echus Chasma, near an impressive impact crater, was carved by either water or lava.

• 这个高耸的峭壁高约四千公尺，围绕在艾彻斯峡谷周围，这可能是由水或熔岩所雕塑形成，它的旁边还有一个陨石坑。