Aboriginal trackers work with the Wollombi police through to the 1930s. One “alert and sagacious” Aboriginal tracker together with Magistrate of Wollombi David Dunlop, pursue the Tunnel Gang for several hours through ravines and over precipices on foot where horses can not go until about eight miles off the northern road all tracks fail. (The Australian, 3 September 1840) The local tracker and his family live in a house near the Wollombi Court until the 1930s (Carl Hoipo, Wollombi Historical Society)