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If you count the height off the sea floor the tallest volcano would be Mauna Loa with a rough height of 58,000 feet from base to summit. THis number is taken from the 11,000 feet above sealevel, plus the additional 28,000 feet to the sea floor, and another 19,000 feet that has been compressed into the sea floor due to the large weight of the mountain.

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13y ago

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