Obviously as a puzzle cache the co-ords lead you to the nearest village to the cache. Try the pub, its great for meals.
The usual rules apply, Fill in all the sqaures in the grid so that each row, column and each of the 3x3 squares contains all the digits from 1 to 9.
The cache is located at N 53 ab.cde W 001 fg.hjk
The reason I have called the cache The keys of Sudoku is that the cache container (an ammo box) contains key rings. Please stick to this theme.
You can check your answers for this puzzle on Geochecker.com.