The Royal National Park has been closed as crews of firefighters respond to two bushfires burning out-of-control near Wattamolla in Sydney's south on Saturday afternoon.
Multiple crews of Rural Fire Service firefighters and aircraft are responding to the bushfires, burning in the park along Sir Bertram Stevens Dr at Flat Rock and south of Wattamolla Road.
The park is being closed at McKell Avenue and Farnell Avenue, and visitors are being advised to avoid the area.
Fire crews are unsure how many people are in the park, which is a popular weekend destination, but have warned visitors to leave "only if the path is clear" or if directed by emergency services.
The RFS has issued an emergency warning, and is sending telephone warnings to people in the area.
Visitors have been advised to head to the beaches, which "may offer safety".
Follow our updates below and check www.rfs.nsw.gov.au for advice.
At this stage the RFS is unaware of any direct threats to properties, but warns residents in the Bundeena area to "watch and act," and enact their bushfire survival plans.
The fire is emitting large amounts of smoke, which can be seen right across Sydney.
Parts of the park at Wattamolla had been closed earlier on Saturday as the car parks were "full".
It is understood a surfing carnival is taking place within the park, but RFS do not believe there is any threat to visitors at the event at this stage.
Meanwhile, firefighters continue to battle with a bushfire that's burnt about 20,000 hectares in the Pilliga Forest between Coonabarabran and Narrabri.
The fire is at an advice level with no homes are under threat, but residents are being urged to monitor conditions.
Firefighters are currently conducting back burning operations in the area and the Newell Highway has been shut between Narrabri and Coonabarabran and is likely to remain closed on Saturday.
Further south, firefighters from the ACT have been sent across the NSW border to protect houses threatened by a bushfire in the Southern Tablelands.
Three heavy tankers, backed up by smaller crews, were deployed to the 274 hectare Braidwood blaze on Saturday morning after it burned through the night.
"Their objectives are to protect properties, attack and contain the main fire and contain spot fires," the ACT Emergency Services Agency said.
More to come
with AAP
