(IMAGE) University of Cologne Caption Artist’s impression: The InSight lander is located in Homestead Hollow, a small impact crater. The seismometer SEIS that was used in this study is the light-coloured hemisphere on the ground in front of the lander. The ground beneath it consists of a sandy regolith layer on top of alternate layers of sediments (yellow-orange colours) and basaltic rocks, i.e. former lava flows (brown colours). Credit Géraldine Zenhäusern / ETH Zürich Usage Restrictions none License Original 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.