Summary: Axe grinding grooves and water channels along a creek below the Topham Trail.

Along a small creek near the Topham Trail are a few Axe Grinding Grooves (AGGs).

Between some of the potholes in the creek bed are channels, which direct water seepage into and around the potholes. Research by Jo McDonald found that: “water channels occur on a small proportion of engraving sites (c.3%). All sites with water channels also have grinding grooves present. Of the sites which contain engravings and grinding grooves, 23% also have water channels”.

Topham Trail AGGs - Site Summary

Aboriginal Sites by National Park

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.
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.
Yengo National Park was an important spiritual and cultural place for the Darkinjung and Wonnarua People for thousands of years, and 640 Aboriginal cultural sites are recorded in the park and nearby areas.
Many sites Aboriginal engraving sites across the inner suburbs of Sydney have been destroyed or are very weatheredl. The sites which remain are isolated from their natural environment.
Over a hundred Aboriginal sites have been recorded in the Hornsby region, with many of these in the Berowra Valley National Park and around the suburb of Berowra.
There are over 350 Aboriginal engraving and sites recorded in the Central Coast region, many of these in the Brisbane Water National Park.
Located to the north-west of Sydney, just south of the Dharug and Yengo National Parks. Maroota has a high concentration of (known) Aboriginal sites. The original inhabitants of the Maroota area were the Darug people.
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