Above Reservoir (IMAGE) Field Museum Caption Gary Feinman and Shandong University archaeology students walk the Qi wall above a modern reservoir. Credit Courtney of Linda M. Nicholas Usage Restrictions Must use image 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.