Firefighters watching Fraser Island blaze

Firefighters are preparing to defend two townships on Queensland's Fraser Island.
Firefighters are preparing to defend two townships on Queensland's Fraser Island.

Firefighters continue to monitor a massive slow-moving month-old bushfire in a remote area of Queensland's Fraser Island.

The blaze is burning on multiple fronts about a kilometre north of Cathedrals Beach, the Department of Environment said on Sunday.

"Rangers are preparing fire lines around the townships of Happy Valley and Cathedrals," a spokeswoman said.

Smoke is visible from mainland communities and towns to the south, such as Rainbow Beach.

Campers are believed to have started the blaze after they lit an illegal cooking fire on October 14 and didn't extinguish it properly.

The fire has burned bushland from Rooney's Point in the north to Dundubara Campground in the south - about 40 km of the 120km long island.

Queensland Fire and Emergency crews are assisting Parks and Wildlife rangers on the World Heritage-listed national park sand island.

Planning is also under way to start backburning around Cathedral Beach.

Tourists at Cathedrals campground and Pippies Backpackers have been evacuated to the southern end of the island.

Australian Associated Press