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Posts Tagged ‘geology’

It is inarguable that the first sight of the Grand Tetons from any of its approaches it truly breathe taking. Entering Jackson Hole from Yellowstone you are treated to the northern Tetons where they tower above beautiful Jackson Lake.

And you thought Mt. St Helens was a big eruption! At the heart of Yellowstone’s past, present, and future lies volcanism, the Yellowstone Caldera. The Yellowstone Caldera is one of the largest and most active calderas in the world. Catastrophic eruptions occurred here about 2 million years ago, then 1.2 million years ago, and then 600,000 years a go. The latest eruption spewed out nearly 240 cubic miles of debris.