These photographs were taken (early 1980's) soon after a 10km long trench was dug from the property adjoining the Stockyard Gully Nature Reserve into the reserve. The entrance to Stockyard Tunnel was drilled and blasted to remove large boulders from the entrance to improve the water flow into the cave.
The trench was dug to reduce surface water on the adjoining property.
The perpetrators of this act were never prosecuted.
