West Australia Department of Parks and Wildlife
- Apply in writing to dive at least four weeks in advance of trip to:
- District Manager, Department of Parks and Wildlife
- P.O. Box 234 Esperance WA 6450
- Ph: (08) 9083 2100
- Fax: (08) 9071 3657
300 metre long main tunnel with two interconnected phreatic networks, one half-filled and the other completely filled with water.