Shallow Underground Laboratory (IMAGE) DOE/Pacific Northwest National Laboratory Caption About 40 feet below ground, shielded by a mound of concrete, rocks and soil, lies the Shallow Underground Laboratory, which is central to Pacific Northwest National Laboratory’s capabilities in national security and fundamental physics. Credit (Photo by Andrea Starr | Pacific Northwest National Laboratory) Usage Restrictions No restrictions. License Public Domain 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.