Treachery Beach NSW Stock Photos. Treachery Beach NSW is a new set of photos by Chris Prior.Treachery beach is located two kilometres south of Seal Rocks on the lower north coast of NSW Australia. The area is a pristine wilderness and a fabulous place for camping, relaxing, bush walking, fishing surfing and swimming. There is a magnificent managed camp ground above the sand dunes and the regular visitors have established a culture of respect for the environment and really look after the place. The headland is a wonderful iconic geographic feature created by the upheaval of the ocean floor leaving the rocks on a 45 degree angle which in itself is a spectacular sight. You’ll find more amazing images from Chris Prior here.