An emergency warning is in place for two out-of-control blazes burning through the Royal National Park in Sydney’s south, with thick plumes of smoke being seen across the city.
The park has been closed and firefighters and waterbombing aircraft are battling the fires near Bundeena.
One is burning along Sir Bertram Stevens Drive at Flat Rock and the other, south of Wattamolla Road.
On a day of high temperatures, there were about 1,000 people in the national park trying to cool down at the beaches and rockpools, with all car parks full.
The NSW Rural Fire Service (RFS) has instructed those at Little Garie, Garie, North Era, South Era or Burning Palms to remain in place.
For those elsewhere in the park, the RFS advises to leave only if the path is clear or if directed by emergency services.
Nearby beaches may offer safety.