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This aerial shot shows the aftermath of Tuesday’s┬áraging scrub fire on the Queenstown-Glenorchy Road.

Eight choppers and 50 firefighters from across the region tackled the blaze, which left Head of the Lake residents stranded and without power.

It is likely to have started at a Rat Point campsite just before midnight on Tuesday.

The fire, which covered about 150 hectares, was only 2.5km away from homes in nearby Bob’s Cove and Closeburn Station.

Deputy rural fire boss Jamie Cowan says investigations into the cause will begin today.

Rat Point, which is accessible by vehicle and boat, is often used by campers.

Queenstown cops are asking witnesses to come forward with any information on how it started.

Queenstown’s council announced just after midday today the fire is “largely contained” and power and road access has been restored to Glenorchy.

Two ground crews will patrol the area today to make sure the fire is fully extinguished.

A helicopter will also be on site to dampen down hot spots.

Fire crews will remain on the ground as the operation is expected to last for three to five days.

Drivers are asked to take care when driving through the area as ground crews continue to work on the side of the road.

The road may close again throughout the day as monitoring work continues.