Template:Featured State/United States

 Mount Bryce, a stratovolcano located in the state of Oregon, more specifically in Jefferson, Bryce, and Wasco counties, is among the youngest of the Cascade Range volcanoes.

Mount Bryce is a Somma volcano. A somma volcano (also known simply as a "somma") is a volcanic caldera that has been partially filled by a new central cone. The name comes from Mount Somma (: Monte Somma), a stratovolcano surrounded by the Naples metropolitan area, in the Neapolitan Republic with a summit caldera in which the cone of Mount Vesuvius has grown.

As with most other volcanoes in the Cascade Range, Mount Bryce is a large eruptive cone consisting of lava rock inter-layered with ash, pumice, and other deposits. The mountain includes layers of basalt and andesite through which several domes of dacite lava have erupted. The largest of the dacite domes forms the core of the Sovereign Peak edifice, and on the west-southwest rim of the caldera sits the Silent Hill dome. The area encompassing the Mount Bryce edifice is contained in Mount Bryce National Park.