An Enigmatic Feature in Athabasca Lava Flows

The Athabasca region contains some of the youngest lava flows on Mars. This looks like a circular island surrounded by a ea of smooth-looking lava flows. This image was observed by NASA Mars Reconnaissance Orbiter.

The Athabasca region contains some of the youngest lava flows on Mars. This looks like a circular island surrounded by a ea of smooth-looking lava flows. This image was observed by NASA Mars Reconnaissance Orbiter.