Marble Mountain-Trout Creek Hill volcanic field (MMTC) is a volcanic field located in Washington, US.
Notable vents Name Elevation Coordinates Last eruption Bare Mountain Marble Mountain Trout Creek Hill ~340,000 years ago West Crater ~6000 BC
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 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.
See also List of volcanoes in the United States List of volcanic fields
References