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More than half of Tekapo lake bed covered in large landslides
More than half of the 83 square kilometre lake floor was covered in landslide deposits, some spreading more than 1km across the lake bed.
Work is underway to discover if landslides on Tekapo's lake bed could generate destructive tsunami.
The first complete mapping of the Tekapo lake bed has found "astounding" large landslides cover more than half of the lake.
The Niwa research of the South Canterbury hydro lake was collected over the past month using state-of-the-art sonar equipment.