Green Mountain, Mountain summit in Glacier Peak Wilderness, Snohomish County, United States.

Green Mountain is a 1,950 m peak in the Glacier Peak Wilderness above the Suiattle River in Snohomish County, Washington. Its summit holds the Green Mountain Lookout, a fire lookout that Congress protected by an act passed in 2014. The mountain lies in the marine west coast climate zone of western North America, where Pacific fronts drop heavy, wet snow on the west slopes in winter.

The fire lookout was built in 1933 to watch for forest fires across the surrounding wilderness. The station faced demolition decades later but was saved by protective legislation, ensuring its preservation as a historical structure.

The Green Mountain Lookout was preserved by an Act of Congress in 2014, after the structure faced demolition. The building recalls the fire-watching tradition of the North Cascades, where crews scanned the Suiattle River drainage for smoke. Visitors reach it on foot within the Glacier Peak Wilderness.

The hike is demanding and requires good fitness because the trail climbs steeply through forest and gains significant elevation. Start early in the day and come prepared with sturdy boots, plenty of water, and layers for changing mountain weather.

The lookout was saved by an Act of Congress in 2014, a rare protection for a fire station in a federal wilderness. The structure was built in 1933 and later faced demolition before that law secured its future. Visitors who reach the summit see the building that this legislative action kept in place.