1,621 followers
70 followers
1,621 followers
1,180 followers
RT @USGSVolcanoes: Nope, #MountStHelens didn't “blow off its top”. The #debris #avalanche is responsible for the destruction of the volcano…
RT @USGSVolcanoes: Nope, #MountStHelens didn't “blow off its top”. The #debris #avalanche is responsible for the destruction of the volcano…