A man was winched 40m above a Wellington forest to get the medical treatment he needed today.
It took the Life Flight Westpac Rescue Helicopter crew 30 minutes to locate the man, aged in his 60s, who had suffered a heart problem while walking on the Mackenzie Track.
The man was near the Butterfly Creek area of the track when emergency services were called at about 1.45pm.
Crewman Julian Burn said 80 to 90 per cent of the track was covered in a thick canopy - presenting a number of issues for the rescuers.
"It was quite a difficult place that the patient had gone for a walk, it's heavily forested with a lot of canopies," he said.