Note: this is a beacon cache.
A device with ant+ and a suitable app or a manufacturer specific hand held GPSr will be required to find this cache. The cache is not at the listed co-ordinates.
Navigate to the beacon to download the co-ordinates for the final, then make your way to ground zero. You do not need to enter into Watercorp's area, just head south at the gate and make your path through the South Western edge of Neerabup National Park. An easy park and grab.
A small prize has been left for the first to find. The cache has some swaps for others.