Tombos Site (IMAGE) Purdue University Caption Michele Buzon, a professor of anthropology, (top) and Sarah Schrader, an assistant professor of human osteoarchaeology at Leiden University in The Netherlands, excavate at the Tombos site along the Nile River Valley in modern day Sudan in 2010. Both archaeologists were part of the team that unearthed an ancient horse in 2011 at the site. Schrader was a Purdue graduate student at the time. Credit Photo provided 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.