The cache is not at the above coordinates, which are for parking.
In order to find this cache, you must first find
Blackness Bank. The coordinates are on a piece of paper taped
inside the lid of Blackness Bank.
Enjoy the hunt! The cache is on a well-trodden route for
walkers, so please be discreet. You can pretend to be having a
rest, admiring the view, eating sandwiches or taking photos. Please
rehide the box carefully, and ensure that the foundations are
secure to stop the covering falling away.