Mt. Lassen Volcano

Footage of the eruption of Mt. Lassen in Northern California. Mt. Lassen erupted from 1914-1917, the last volcano in the Cascades to erupt prior to Mt. St. Helens. This footage was most likely taken in 1917 and is the oldest surviving footage of an American volcano erupting. Footage of the eruption of Mt. Lassen in Northern California. Mt. Lassen erupted from 1914-1917, the last volcano in the Cascades to erupt prior to Mt. St. Helens. This footage was most likely taken in 1917 and is the oldest surviving footage of an American volcano erupting.