Palouse River Canyon (IMAGE) University of Texas at Austin Caption The Palouse River Canyon is part of the Channeled Scablands, a geologic feature in eastern Washington that was carved by catastrophic flooding during the last ice age. Researchers found that large floods on Mars and Earth carve the land in a similar manner. Credit Keith Ewing Usage Restrictions Include photo credit 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.