Geography
The central ranges are of a different topographical nature to the rest of the Flinders, being composed of roughly flat-lying strata, creating a high plateau into which spectacular gorges have been cut, instead of the buckled and folded strata further south which lead to the ubiquitous cuestas of Wilpena Pound. The Gammons are dominated by "The Plateau" in the southwest, which is contiguous with and of much the same height as the Blue Range further northeast, culminating in Benbonyathe Hill (1064m), the highest point in the Flinders north of Wilpena. Other notable and interestingly named summits on the largely flat range and plateau include Elephant Hill (with adjacent outliers North Tusk and South Tusk), Mount Changeweather, Four Winds Hill, and Prow Point. Of these "rounded hills" of the plateau, Warren Bonython writes that "at their edge the slope, which was gentle near the crest, progressively steepens and then changes dramatically into a precipice plunging down to a rock-strewn creek bed perhaps a thousand feet below" (p 125).
Some of the most interesting features of the ranges are these deep gorges cut in the south-eastern side of the Blue Range: Bunyip Chasm, The Terraces, and Fern Chasm are all areas often visited by bushwalkers. Although lower than the mountains which surround it on three sides, the dramatic Cleft Peak is also often visited, so-named for a spectacular cleft separating it into two summits, and providing opportunities for rockclimbing to a summit, not often necessary with peaks in the Flinders.
The high central range and plateau is surrounded by a number of smaller outlying ranges, creating the encircling "pounds" of low hills: Balcanoona Range encloses Illinawortina Pound to the east, Mainwater Pound is to the north, enclosed by the Yankaninna Range, and Arcoona Pound to the west. There are also several major mountains on the margin of the Gammons, two of which are actually higher the main range: Gammon Hill (1012m) in the north, overlooking Mainwater and Arcoona Pounds, and Mount McKinlay (1050m) dominating the south.
Read more about this topic: Vulkathunha-Gammon Ranges National Park
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