The main co is for the main entrance to the wood only.
Other entry points can be found at: N 52 45.423 W 001 32.500 and N 52 45.606 W 001 32.459.
The cache co’s are given by N 52 45.AB9 W 001 3E.CD5
The cache can be found by finding the information boards and answering the questions to fill in the co equation. Co’s and questions are given below.