Caverns (IMAGE) DOE/Fermi National Accelerator Laboratory Caption Two colossal caverns, each more than 500 feet long and seven-stories tall, were completed to contain the gigantic particle detector modules for the Long-Baseline Neutrino Facility/Deep Underground Neutrino Experiment, an international collaboration led by Fermilab. A third cavern will house utilities for the operation of the DUNE far detector. Credit Ryan Postel, Fermilab 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.