A rescue helicopter was this morning attempting to reach a tramper who became lost and disoriented in poor weather in Marlborough yesterday afternoon.
The tramper was located after 8pm last night but bad weather prevented a helicopter from reaching them last night.
About 4.40pm yesterday an unregistered personal locator beacon was activated in the Mt Richmond Forest Park area, the Nelson Marlborough Rescue Helicopter said.
The helicopter then used its onboard beacon tracker to narrow down the location of the beacon to somewhere near the summit of Mt Rintoul, but bad weather prevented the helicopter from getting close.
A police land search and rescue ground team was dropped into the area and found the tramper.
They camped on the mountain overnight and the rescue helicopter had attempted to reach them again this morning.
Poor weather had so far prevented it from getting close but further attempts would be made during the day.