Fresh gravel is being delivered by air to one of the tracks in Whangarei's Parihaka Reserve today.
The Drummond Track on Mt Parihaka has been closed since mid February while it is upgraded by council contractors.
A helicopter has been ferrying buckets of gravel from the summit of Mt Parihaka to the crews working on the track since early morning.
Whangarei District Council projects engineer Rachel Mannion said the council hoped to have the Drummond Track open by the end of the week, following a final walk-through and check tomorrow.
Ms Mannion said the helicopter would work until just before dark tonight, then would finish off work tomorrow morning before 10am.