Premise: Helens and many similar volcanoes that seem to undergo regular collapse events, I tend to believe this plays a role in alleviating a lot of the pressure, henceforth preventing what would have otherwise lead into an eventual caldera eruption event. Crater Lake is the only VEI7 eruption in the Cascades I am aware off. It erupted some 50 km3, which is big compared to Long Valley That will have to do with the size of the magma chambers
Statement: It erupted some 50 km3, which is huge compared to Long Valley That will have to do with the size of the magma chambers
Relationship: neutral