Hessian Ried II (IMAGE) Goethe University Frankfurt Caption The investigation of the Landgraben’s history will include the use of geophysical surveys, drillings and smaller archaeological excavations. Credit (Photo: Lars Görze, State Service for Heritage Protection and Management Hesse) Usage Restrictions none License Original 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.