Location: 31 Luddenham Road Orchard Hills. Take Mamre Road southern turnoff from the M4 2.2km to Luddenham Road, then right turn on Luddenham Road travelling about 400m SW.
Altitude, Lat/Long: 25 m AHD;-33.8055,150.7656;
Time required at site: 30 mins.
Relevance to Cox’s Road: This cairn marks the starting point of the Blaxland, Lawson and Wentworth expedition to find a route through the Blue Mountains, on the 11th May 1813. The starting point is adjacent to Lee Holme, the former site of Blaxland’s farm. The crossing led eventually to the construction of Cox’s Road through to the Bathurst Plains.