Sumatra coastal cave records stunning tsunami history

The tsunami record from about 7,500 to 3,000 years ago is impeccable, say the scientists

Sumatra's proximity to the Indo-Australia and Sunda tectonic plate boundary, and the giant earthquakes that occur there, means its shores are at risk of major inundations.

Understanding how often these occur is important for policy and planning in the region.

The Acehnese cave lies about 100m back from the swash zone at current high-tide. Its entrance is also raised somewhat, and this prevents all waters from getting into the opening - a


just wow

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