Deep Fractures on Mars (IMAGE) European Space Agency Caption Nili Fossae is a graben system on Mars. It is found at 22°N / 77°E, northeast of the Syrtis Major volcanic province, on the northwestern edge of the giant Isidis impact basin. This image shows an area covering approximately 10,300 sq km. It was taken during orbit 5270, on Feb. 8, 2008, using the High-Resolution Stereo Camera on Mars Express. Credit ESA/DLR/FU Berlin (G. Neukum) Usage Restrictions For non-commercial use only. For free use only with full credit line indicated. License Licensed content 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.