The Department of Conservation (Doc) is looking to increase the number of tourist helicopter flights landing on the Ngapunatoru Ice Plateau, underneath the highest peak in the Darran Mountains.
Nine helicopter companies have the ability to use the glacial landing site, though not all companies fly into the area.
Moves to raise the limit have recreational mountaineers and trampers fearing the worst. They say if all companies take up their allotment there would be a non-stop buzz of helicopters throughout the day.
Federated Mountain Clubs of New Zealand president Robin McNeill said the major concern centred on the flight path the helicopters would take over a protected wilderness range.
‘‘We face having two helicopters in the air at any one time flying over the Harrison Valley in the Pembroke Wilderness Area.''
He said the area should remain protected. There were plenty of potential landing sites elsewhere in South Island national parks.
"There's aircraft like crazy up on the West Coast and Mt Cook. Do you really have to be on virgin snow?'' Mr McNeill asked.
He said the final result could be far worse than feared, with up to 160 daily flights across the back country.
The organisation had met the government department before Christmas and lobbied for alternative landing sites. The FMC had also called for a more democratic approach to any proposed flight changes through a national park management review.
New Zealand Alpine Tramping Club executive committee chairman Geoff Gabites said the organisation was also concerned how a sudden surge in flights would affect the environment.
Doc was approached for comment on Sunday but did not respond.
Tourism Industry Association of New Zealand chief executive Chris Roberts yesterday accused some in the outdoor lobby of scaremongering, saying Doc was always mindful of balancing the need for conservation with tourism.
