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Ground Truth Trekking

By Michael Le Page

On 17 October 2015, a landslide near the end of the Tyndall Glacier in Alaska sent 180 million tonnes of rock plunging into a body of water called Taan Fiord. A couple of kilometres away, on the other side of the valley, the resulting wave reached a height of193 metres, according to a new study of the site. That’s one of the highest tsunamis ever recorded.

The landslide was caused by the retreat of the glacier, say the researchers, likely as a result of global …

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