来自MSN1 个月
Washington State Has The Deadliest And Most Destructive Volcanic Eruption In US History
However, high level volcanic explosions do happen, as was the case with Mount Saint Helens in Washington ... On top of that, pyroclastic flows — an extremely hot and deadly current of volcanic ...
IFLScience on MSN2 个月
Scientists Dropped Gophers Onto Mount St Helens For 1 Day. 40 Years Later, The Effect Is ...
When Mount St Helens erupted in 1980, the resulting lava, ash, and debris turned the landscape barren for miles around. It ...