The most striking feature of the Plan was a vast
green belt to hem in the city's sprawl. Beginning near
Pennant Hills, the five-kilometre-wide belt would have curved through
Western Sydney, encircling
Baulkham Hills,
Blacktown,
Seven Hills and
Liverpool before ending on the banks of the
Georges River opposite
East Hills. A non-contiguous section would then have covered the western
Sutherland Shire, roughly bordered by the Georges River in the north and the
Woronora River in the east. Motorists travelling north on the
Cumberland Highway would have seen, with a few exceptions around Liverpool and
Toongabbie, only green space to their left. The Green Belt augmented an already extensive national parks system around Sydney, stretching from
Royal National Park in the south to
Ku-ring-gai Chase National Park in the north. == Roads ==