Thirty minutes after an engineer closed a Kapiti Coast road, 150 cubic metres of rock and debris crashed down from the hillside above.
Kapiti Coast District Council was already monitoring the hillside above Waterfall Rd, which winds into the hills behind Raumati Beach, before today's slip at 10am.
''Luckily, our network contracts engineer Neil Williams was in the area before the slip happened to monitor the bank, as he had noticed a few rocks falling from it earlier,'' council spokeswoman Claire Harman said.
''The rocks coming down were getting more frequent so Neil made the call to close the road about 30 minutes before the slip happened.''
The slip was halfway along an unsealed section of the road towards the south end.
It included further slippage from an existing slip site.
The council said work was already under way to clear the road and to pull down loose debris from the bank to make it stable.
The road was expected to reopen tomorrow.
- The Dominion Post
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