Tokyo Bay tunnel (IMAGE) University of Tokyo Caption A cross-section diagram details how the tunnel is situated below Tokyo Bay and the blue star marks the location of the muographic instruments. Credit ©2022 Tanaka et al. Usage Restrictions Credit ©2022 Tanaka et al. 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.