Along the Oregon Trackway (video) University of Oregon Share Print E-Mail Loading video... Caption Video takes viewers on a journey above and along a mammoth trackway at a remote site in Lake County, Oregon. Evidence for the site was found in 2014 by the UO's Gregory Retallack and excavated in 2017 by a research team. The ancient path contains multiple footprints of Columbian mammoths that once roamed the region about 43,000 years ago. Credit Video by Dean Walton, science and technology outreach librarian, University of Oregon Usage Restrictions Use credit 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.