Please be aware that you should only undertake this cache with good footwear, in good weather conditions, and you must have a head for heights. The area has steep drops and is not suitable for people with young children or dogs. Additionally, you may need to bring a good torch with you. The cache will take a little over half an hour to complete depending on where you park.
From the starting location, follow the marked and named path. You need to record the following...
A: The number of hand rails.
B: The number of feet on the bench
When you have come to the end, proceed to N 53° 07.571 W 001° 33.405 down the steps to the nexus of paths.
C: The number of paths from here (including barred exits).
You now have to work out the final numbers...
D = A + B
E = C + B
F = E - A
G = A + A
The cache is located at N 53° 0E.CGB W 001° FF.FEE. For those interested, inside you should find a sheet with some local information and history about the area.
There is an alternative cache for climbers (because the area is restricted to climbers, not because any specialist equipment (other than your torch) or climbing is required). Please do not attempt this unless you accept full responsibility for the risks incurred. The second cache is located at N 53° 0E.CD0 W 001° FF.ACD. Be careful how you get there - there is a path, a direct approach isn't recommended! When there, follow the obvious 'feature' to the end. You'll want to add some extra time and a difficulty star for this one. Note that you should claim only one of these caches!