According to NASA, Venus is mostly covered in flat lands. However, it still has valleys and roughly six grand regions of mountains. Venus shows evidence of active volcanoes. This is an image of Maat Mons, a volcano that extends five miles high. Named for the Egyptian goddess of truth and justice, Maat Mons is revealed here by the Magellan spacecraft. NASA points out that lava flows extend from the volcano across the plains in the foreground.