THE 'sinkhole' site at Inskip Pt is now "relatively stable", according to a geotechnical engineer advising Queensland Parks and Wildlife Service.
The engineer also said the event may have been a "near shore landslide" rather than a true sinkhole.
Coastal erosion is still occurring and this may result in more trees collapsing.
Erosion may continue to occur slowly for some weeks, a QPWS spokesperson advised.
The MV Beagle campground and eastern section of Sarawak campground will remain closed and barriers will be extended out to 200m radius for safety reasons.
The following campgrounds remain open: MV Natone, SS Dorrigo and The Oaks.
Access to the barge via Inskip Point road remains open to vehicles.
The sinkhole opened up along the shoreline at approximately 10.30pm on September, leading to the evacuation of 300 people.
All campers remain safe and accounted for, and no injuries have been reported.
The sinkhole is estimated to be 200 metres long, 50 metres wide, some 7.5 metres deep in its central area and 9 metres at its deepest point, further out from the central area.
In the interest of public safety, QPWS is urging people to avoid the area, observe traffic barriers and warning signs.
Campers who have booked for campsites that have been closed can call 13 QGOV (13 74 68) to discuss alternative arrangements with QPWS.
Refunds will be offered to those who wish to cancel their booking.
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