Quote:
Originally Posted by knucklesplitter
Didn't Lake Tahoe form basically by a volcano (Mt.Pluto) damming up the valley that was once there?
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Tahoe basin was formed by faulting, but the lake might have had both an ice dam during the ice age, and a lava dam from Mt. Pluto...both would have made the lake a bit deeper, but it still would have been a big lake without the dams. The lava dam might have only deepened the lake by 100-200 feet.