A Department of Planning Industry and Environment (DPIE) spokesperson said the environmental damage from the bushfire continues to cause issues for clean up crews.

"Of the 10,700 hectares of Crowdy Bay National Park, approximately 9000ha - 84 percent - of the park was impacted by fire," the spokesperson said.

"The park was closed to the public for five weeks, which was a very short period of time given the impact to the park and critical infrastructure."

The spokesperson said there was extensive damage across the park which impacted recovery efforts and had an obvious impact on Christmas holiday-maker numbers.

"Key visitor assets that were significantly damaged or destroyed included the water supply to Diamond Head, signage, walking tracks, pedestrian bridges, roads, a toilet block and the historical Kylie's Hut," the spokesperson said.

"We are not able to give an accurate estimate on the impact to wildlife at this stage, although there has been many recent sightings of recovering and returning wildlife such as koalas, kangaroos, goanna, echidna and many bird species including raptor bird species."

The DPIE said they will collaborate with the NPWS to see if Kylie's Hut should be rebuilt.

"Kylie's Hut was destroyed by the fire, although some of the original materials remain on site and the chimney foundations are intact.

"It will take some time to undergo assessments and we will seek advice from heritage specialists on whether or not Kylie's Hut should be rebuilt.

"NPWS is working hard to repair and replace damaged assets such as walking tracks and signage, as well as re-opening the Crowdy Gap campground."