Te Puna Quarry Park is closed following a fatal crash this week.
Emergency services were called to the park just after 12.0pm on Wednesday, following reports of a digger falling down a mountain.
A police spokesperson says a man was taken to hospital in a critical condition.
“Sadly he passed away a short time later,” police confirmed in a statement last night.
Enquiries into the circumstances are ongoing and WorkSafe has been notified.
A Worksafe spokesperson says “we are currently making initial queries and this will determine our next steps”.
In a post on Facebook, Te Pune Quarry Park says the park will remain closed until further notice.
“We will update the Facebook page when it is reopened.”