Fleuve Manche (IMAGE) UiT The Arctic University of Norway Caption Based on the latest reconstruction of the famous ice age river system, Fleuve Manche, the scientists have calculated that its catchment area was similar to that of the Mississippi. Illustration: H. Patton/CAGE Credit H.Patton/CAGE Usage Restrictions Attribution 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.