Image courtesy of National Park Service via Guam: A Biogeographic and Maritime Cultural Landscape Exploration of a WWII Amphibious Battlefield. Download largest version (jpg, 12.7 MB).
Anne Wright diving on an Amtrac amphibious tractor as part of an effort to generate high-resolution, in-depth documentation of this important cultural resource, one of the few currently known underwater relics from the 1944 invasion of Guam.