The Pinnacles, which has also been called Three Peaks in 1942 and Three Nob Hill in 1955, is a rocky outcrop on the Mount Hay Range. Along the narrow and rocky ridge are multiple Aboriginal grinding groove sites and an engraving site.
The largest of the grinding groove sites has 42 grinding grooves around multiple, shallow pools.
Further along the ridge is an isolated site with two shallow grooves.


Towards the end of The Pinnacles is a very weathered Aboriginal engraving site, which has what appears to be three pairs of tracks across a shallow depression in the rock platform.
Next to these tracks is another engraving, possible a bird track.
There are sweeping views from the ridge out to Lockleys Pylon and Butterbox Point.













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