The access road to Fox Glacier will remain closed indefinitely after a report found it impractical to re-establish road access into the valley since its February closure.
The access road, which leads to Te Moeka o Tuawe off State Highway 6, has been closed since it was flooded for the third time in as many months.
An engineering report commissioned by the Department of Conservation and the New Zealand Transport Agency estimated it would cost $16 million to fix. However, it warned the road would likely be "overwhelmed" within years by ongoing sediment build-up in the valley. The country's largest active slip, known as the Alpine Gardens Landslide, destroyed the access road after more flooding the next month, sending tons of rock and gravel crashing into the Fox valley below.
The report could find no practical solution to stop the massive landslide.