Summary: A single engraved circle and three sets of axe grinding grooves in a small rock platform in Hidden Valley.

A small rock platform above Hidden Valley has a single circular engraving in the sandstone, and a few groups of axe grinding grooves.

AWAT6417 LR Hidden Valley Grinding Grooves

The stone circle may indicate that this was a sacred area. It is fairly deeply carved.

AWAT6439 LR Hidden Valley Grinding Grooves

There are at least three sets of shallow axe grinding grooves.

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Aboriginal Sites by National Park

Red Hands Cave, Glenbrook (Blue Mountains)
The Blue Mountains National Park (and surrounding areas along the Great Western Highway) is thought to have over a thousand indigenous heritage sites, although much of the park has not been comprehensively surveyed. The Aboriginal rock sites in the Blue Mountains include grinding grooves, stensils, drawing and rock carvings.
A review of different techniques for photographing Aboriginal rock art. This includdes oblique flash, chain and planar mosaic imaging which combines hundreds of overlapping photos.
Over 40 sites have been recorded within the park; many were located along the river bank and were flooded by the building of the weir in 1938.