Mawson Plateau
The Mawson Plateau 30°6′38″S 139°25′19″E / 30.11056°S 139.42194°E is part of the northern Flinders Ranges, located on the Mount Freeling pastoral lease in South Australia, 140 km east of Lyndhurst and adjacent to the northeastern boundary of Arkaroola.
The Mawson Plateau is a 71 km² granite batholith at a height of between 600 and 750m. It is dissected by Saucepan Creek and the Granite Plateau Creek; both are tributaries of the Hamilton Creek. The plateau is bounded by the Hamilton Creek on the north and west, the Granite Escarpment on the east and Freeling Heights in the south.
Originally known as the Freeling Heights lower granite plateau, it was renamed The Mawson Plateau after Sir Douglas Mawson.
The main creek on the plateau has been known by successive owners of the Mount Freeling pastoral lease as the Granite Plateau Creek.
T Junction Waterhole appears on the Yudnamutana 1:50000 topographical map and is ~100m downstream from a distinctive T-junction on Granite Plateau Creek. The waterhole is the location of an old emergency rations cache put there in the early 1980s by the owners of the Arkaroola pastoral lease.
The Granite Escarpment also appears on the Yudnamutana 1:50000 topographical map. It is a high ridge of exposed and weathered granite overlooking Lake Frome.
In a gorge on Granite Plateau Creek there is a high granite cliff known to bushwalkers as Aqualung Wall 30°5′12.5″S 139°27′51.3″E / 30.086806°S 139.464250°E. At the base of the cliff there are permanent waterholes containing water spiders (Dolomedes spp.). The name of the cliff refers to the spider’s habit of submerging below the surface to hunt, or avoid predation, while breathing from bubbles of air attached to hairs on its abdomen.
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