Before you leave home why not spend a few minutes finding out about the village of Challock
Challock is "A" miles north of Ashford
The A-road going north-south through the village is the 25B
The village dates from the year 82C
The contour close to the village centre is D00 foot contour
The A-road going east-west through the village is the 25E
The cache can be found at N AB° BC.DC(A+B) E 0° AE.ABC
It should be obvious at which point you should take a little diversion from the main walk to collect this cache