Mcam02603 (image) Geological Society of America Share Print E-Mail Caption This is a close up of a Mastcam image mosaic (Mcam02603) acquired on Sol 620. This conglomerate has grains up to 10 centimeters in diameter and some are well rounded. The grains also are part of a 2-meter-high cross bed. 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.