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”.

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Aboriginal Sites by National Park

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.
The Greater Blue Mountains World Heritage Area protects over 3,000 known Aboriginal heritage sites, and many more which are yet to be recorded. This area includes the Blue Mountains National Park, Gardens of Stone, Wollemi National Park and Yengo National Park.
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.
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. Many more Aboriginal heritage sites are located in the Marramarra National Park. The original inhabitants of the area were the Darug people.
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.