Above: The view north from Bangalley Head. The climb is pretty strenuous, but well worth it for the spectacular views from the highest point on the northern Sydney coast. Barrenjoey Head is clearly visible, as is Palm Beach. The headland in the middle distance is Little Head. The one with the house on top is Careel Head.
Below: The view south towards Avalon. The next headland is Avalon, the beach is Avalon, and then the next headland is Bilgola Head.
This great diagram from the website of Reef Care shows the geological compsition of the various headands of the northern beaches.