Site of drill rig (IMAGE) Geological Society of America Caption The brownish area on the right-hand edge of this image is the site where the rig was, just down the road from Viti Crater. Credit Shane Rooyakkers. Usage Restrictions Credit Shane Rooyakkers. 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.