Leigh Lake Trenching (IMAGE) Seismological Society of America Caption The excavation of trench B at the Leigh Lake site. Shown in the photo (from left to right) are Glenn Thackray, Cooper Brossy, and Darren Zellman. Credit Mark Zellman Usage Restrictions Please include credit information 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.