Landing Ellipse (image) Geological Society of America Share Print E-Mail Caption This is geology within the landing ellipse of the Curiosity Rover. The Hummocky Plains Unit, the sedimentary rock unit that contains cross bedded conglomerate thought to be deposited in an outburst flood, is shown in sage green. Credit NASA Usage Restrictions Credit NASA Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.