Summary: A single, isolated grinding groove along a mostly dry creek bed in Duffys Forest.

An isolated, small pothole along an intermittent creek in Duffys Forest, which has a single grinding groove.

The grinding groove is shallow, but quite distinct.

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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.