Sherman Crater

Sherman Crater is an active volcanic crater on Mount Baker situated at roughly 9,465 feet between Sherman Peak and Grant Peak. The crater has steep walls surrounding a central lava dome, with fumaroles scattered across its floor that continuously release steam and volcanic gases.

The crater experienced its most recent recorded eruption between September and November 1880. This eruption marked the last major volcanic activity documented at this location on the Cascade Range.

Scientists and geologists regularly study the crater's fumaroles and thermal activity to understand volcanic patterns in the Cascade Range.

Reaching the crater requires specialized mountaineering gear and official permits from relevant authorities before attempting the climb. The route is technically challenging and best suited for experienced climbers or those joining organized expeditions.

The crater's fumaroles continuously release steam columns that form visible patterns observable from distant viewpoints around the mountain. These steam plumes serve researchers as visible indicators of the site's ongoing thermal and volcanic behavior.

Location: Whatcom County

GPS coordinates: 48.76917,-121.81472

Latest update: December 14, 2025 11:05