After the First World War, working-class families came to the camps and built new dwellings and lodges.
The original camps were owned and operated by people such as a Mr Lewers who built, in 1908, what is Harbord's oldest building (now a restaurant).
Wishing to link Manly and Freshwater, they created a cave and a walkway which is still used today, although the pathway requires some climbing, due to rock falls.
With the growth of Sydney, the Shire Clerk of Warringah, Mr. Jamieson, wrote to the Post Master General's Department in 1923 about changing the name of the community.
It is recorded that this was because of the doubtful and riotous characters who frequented the place at weekends in the summer.
The Reserve was dedicated in a ceremony at Manly Beach by world surfing champion Kelly Slater accompanied by the Governor of New South Wales, Australia, Professor Marie Bashir.