Bill Isherwood began caving and climbing in 1956 and within two years was establishing virgin passageways in caves in West Virginia. In the early 1960s Bill worked for US Geological Survey in Alaska, stream gauging through many parts of the state. Bill took his experience to the St. Elias Icefield, sounding through ice to determine thickness. By 1965 he took first ‘radio depth sounding’ unit to Antarctica, to measure ice thickness on the Queen Maud Land Traverse II. Towing the antennae behind a snowcat Bill and his team found the deepest ice recorded at that time. He returned to the Antarctic for the following summer plus ‘winter over’, installing a seismic array that could help distinguish between earthquakes and underground nuclear explosions (especially near the antipode, where the Russian nuclear test site was located). After operating the station for its first full year, and identifying one Russian nuclear test, he returned to the US. By the early 1970s Bill was asked by his employer, Stanford Research Institute, to take over a program at Chulalongkorn University (in Bangkok) at which time he also met and married exploration-partner Dana. In the years since membership, we have climbed, traveled, and worked in extreme locations, including kayaking in remote areas of Alaska, Greenland, Baffin Island, New Zealand, Antarctic waters, etc. Bill has served as an Explorers Club officer for chapters in China, Colorado, San Francisco, and at home here in the Pacific Northwest.