A man received burns to his arm and leg when the LPG cylinder he was attending to caught fire at the Glendhu Bay Lakeside Holiday Park in central Otago late yesterday morning.
The Christchurch man is understood to have been a member of a group of two families who were packing up their tents to return home.
Witnesses saw flames erupt from the cylinder as the man was disconnecting it.
Fellow campers helped him to a cold water tap and then to the lake to keep his burns cool until an ambulance from Wanaka, arrived.
Wanaka senior constable Mike Johnston said the man had disconnected the cylinder from a gas barbecue cooker and "when he disconnected it there was gas flowing from the container and not too far away from that was a gas operated fridge with a flame.