White Glacier lies on the north slopes of Mount Tom in Washington’s Olympic Mountains within Olympic National Park, occupying a high cirque below the summit and flowing generally north in a terrain-broken form. Its western section is partly separated by rocky ridges, while the main body descends northward and bends northeast near its toe. The glacier has shrunk markedly since the Little Ice Age. In the early 19th century it was connected to Blue Glacier and Black Glacier, but over about 150 years it retreated rapidly, pulling back about 10,500 feet by 1952. After a small advance from 1955 to 1980, retreat resumed, with about 1,000 more feet lost by 2006.