Sutherland Shire Rural Fire Service crews kept busy over the weekend

Rural Fire Service crews from Sutherland Shire were kept busy in recent days, taking part in hazard reduction operations and extinguishing a bushfire which broke out in the Royal National Park on Sunday.

Woronora Bush Fire Brigade volunteers were among those assisting with a planned hazard reduction operation in Engadine on Saturday before being called out to battle a bushfire which broke in the Royal National Park the following day.

In a post on its Facebook page, Woronora Bush Fire Brigade said it received a call to assist the NSW National Parks and Wildlife Service to extinguish an out of control campfire at South West Arm in the Royal National Park.

"We were able to quickly tow and launch one of our smaller firefighting vessels into the Port Hacking to reach the fire at the river's edge," the post said.

"Please remember that campfires are prohibited throughout Royal National Park.

"Regardless, any fire should always be fully extinguished before being left unattended."

Sutherland Shire Rural Fire Service said the bushfire, on Warumbul Road, was believed to have started from a campfire before burning out a small area.

It said a number of boat owners were able to extinguish the fire using buckets before the RFS made it to the scene and mopped up.

The previous day, Woronora Bush Fire Brigade was part of a planned hazardous reduction burn in Engadine.

The burn, which took place on the eastern side of the Forbes Creek Valley between Atherton and Geelong roads, was to protect homes in the area from future bushfires.

More than 100 firefighters, includng RFS and Fire and Rescue NSW personnel, conducted the operation.

"Our crews worked on foot and used dry firefighting techniques to secure less accessible areas of the burn, which will provide increased protection to 150 properties," Woronora Bush Fire Brigade said.

The operation followed a 760 hectare a burn at Wattamolla in the Royal National Park overnight on April 28-29, which could be seen kilometres away.

The burn took place between Wattamolla Road, Sir Betram Stevens Drive, Bundeena Drive and the Little Marley fire trail in a section of dense bushland not burnt since the 1994 bushfires.