Ancient Tsunami Carried Giant Boulders to Tonga: "The largest of the seven boulders is 50 feet (15 meters) wide and estimated to weigh 1,600 tons. It currently sits more than 300 feet (100 meters) from the sea and 30 feet (10 meters) above sea level, an anomaly on the South Pacific island's flat landscape.
'We suspect that this may be the largest [object] moved uphill by a tsunami,' said Cliff Frohlich, a senior scientist at the Institute for Geophysics at the University of Texas at Austin."
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