Marble Mountain-Trout Creek Hill

Marble Mountain-Trout Creek Hill volcanic field (MMTC) is a volcanic field located in Washington, US.

Trout Creek Hill
Trout Creek Hill is a small Pleistocene basaltic shield volcano in Washington, United States. It produced a lava flow about 340,000 years ago that traveled 20 km southeast, which dammed the Columbia River for a short period of time.

West Crater
West Crater is a small andesitic lava dome with associated lava flows in southern Washington.