NZ glacier sheds 50m tonnes of ice
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The Lake Tasman and the Tasman Glacier in New Zealand. (wikipedia.org: James Shook)
Up to 50 million tonnes of ice has fallen off New Zealand's largest glacier.
The Tasman glacier has changed from a U shape to an L after shedding the ice.
Mount Cook Alpine Village general manager Denis Calleson says a trail of huge icebergs has been left behind.
One is believed to be the largest in a fresh water lake outside Antarctica.
The event was thought to have triggered a three-metre-high tsunami in a remote part of Mount Cook National Park.
