Are the northern cliffs which form Constance Gorge and Deanes Creek. Most likely named by Peter Harris, National Parks Association walker, who wrote a report on the area in the NPA journal in the mid 1970s and labelled the photo "The Cliffs of Mars". Peter was also a past president of the Confederation of Bushwalking Clubs. Ref: Correspondence with David Warren Noble, 14th October 2009.