Drive map (IMAGE) University of Wisconsin-Madison Caption A screen shot of the Garmin GPS driving route used for the 1,500-mile sampling trip. Each flag represents a road crossing where Mooney and Rosenthal stopped to collect water from an inflowing tributary. Credit Rob Mooney Usage Restrictions None 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.