that may deposit debris miles away from the volcanic vents. The largest eruption in the last 100 years was the 1911 Mount Katmai event. The Valley of 10,000 Smokes was formed when a 35 cubic km ...

But in 1912 the Novarupta-Katmai eruption forced residents ... For the latest information about this or Mount Spurr, go online to the Alaska Volcano Observatory website.

the largest plug dome volcano in the world, and its last eruption in 1915. The park features boiling springs, fumaroles, and mud pots Dominated by Mount Rainier, an active stratovolcano and the ...