The latest slip on the Haast Pass. Photo supplied.
A rockfall at the Diana Falls slip has closed State
Highway 6 through the Haast Pass again.
New Zealand Transport Agency senior network manager Mark
Pinner said yesterday about 150cu m of rock and material,
including a 20-tonne boulder, fell on to the highway at the
slip site on Tuesday night.
More than 200mm of rain was recorded at the site between
Monday morning and Wednesday morning, almost half of it on
Heavy rain continued yesterday. Mr Pinner said the NZTA's
geotech experts were on site yesterday assessing the slip
''They are concerned with the ongoing movement of rock and
material near the top of the slip face which has prevented us
from being able to clear the road,'' he said.
''The safety of road users and our contractors will always be
our top priority.''
Mr Pinner said contractors would be on site at dawn today to
undertake a review of the slip face and when it might be safe
to clear and reopen the highway.
''We will also need to undertake some sluicing on the lower
section of the slip where there remains some loose
The initial slip on September 10 was estimated to have dumped
40,000cu m of debris on the highway and road closures were in
force between 6pm and 8am at the time of the latest slip.