A spark from a power harrow - similar to a rotary hoe - caused a large fire near Jacks Point on Friday night which, at its peak, was fought by 30 firefighters on the ground and three helicopters with monsoon buckets.
Urban and rural fire crews from Frankton, Queenstown, Kingston and Arrowtown were called to the fire, in an area between Jacks Point and Lake Wakatipu known as The Preserve, just before 6.45pm on Friday. They remained on site until 11pm.
Rural fire officer Jamie Cowan said about 8ha of land was burnt, but it could have been much worse.
"It was a very good save from all the resources. We had quite a lot of resources there fairly quickly but, at this time of year, given things are as dry as they are, we really aren't taking any chances."
The fire area was assessed twice on Saturday and had not shown signs of reigniting.
"The key message to people at this time of year is you need to think about mechanical means of starting fires," Mr Cowan said.