 These included "Bran Jan House" and "Kowmung House" on Scotts Main Range, as well as "Twin Peaks", south of Yerranderie.An exclusion zone of approximately three kilometres was created around Lake Burragorang to protect Sydney's water supply, but a through-track was allowed from Yerranderie to Balloon Pass, then further east, for the benefit of bushwalkers.This pass was later incorporated into the long-distance Katoomba to Mittagong Trail.