World’s Largest Tsunami Debris Discovered Date: September 25, 2008 Source: Soil Science Society of America Summary: A line of massive boulders on the western shore of Tonga may be evidence of ...

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Seven immense coral boulders — one of them a three-story-tall, 1,200-metric-ton monster — have been found far inland on a Tongan island and may be the world's largest tsunami debris.

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A line of massive boulders on the western shore of Tonga may be evidence of the most powerful volcano-triggered tsunami found to date. The house-sized boulders were likely flung ashore by a wave ...