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I just completed watching a special on the Tambora (Pompeii In The East), on the Discovery Channel.

I saw part of that show, (fell asleep, the hazzard of eating dinner and then lying in bed).

The caldera (?) is hugh, five miles across?

[blam]

"The caldera (?) is hugh, five miles across?"

Yup. Compare that to the Yellowstone caldera (super-volcano) which is 50 miles across