Glaciers

The Pacific Northwest Seismic Network (PNSN) and CVO monitor seismicity at Mount Baker via a small network of two stations located within 20 km (12 miles) of the summit, as well as the broader regional PNSN network.

Black Buttes, an arc-shaped ridge of craggy peaks, is the remnant of a large stratovolcano that stood in approximately the same location as Mount Baker, only higher.

Mount Baker's edifice consists mostly of lava flows (as many as 200), and scattered evidence indicates that some of its products were broken up and carried away by glaciers.

After Mount Rainier, Mount Baker is the most heavily glaciated of the Cascade volcanoes.