Still Waters Posted December 12, 2013 #1 Share Posted December 12, 2013 A cave on the northwestern coast of Sumatra holds a remarkable record of big tsunamis in the Indian Ocean. The limestone opening, close to Banda Aceh, retains the sandy deposits washed ashore by huge, earthquake-induced waves over thousands of years. http://www.bbc.co.uk...onment-25269698 1 Link to comment Share on other sites More sharing options...
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