You are looking for a decent sized tin wrapped in brown tape. There is plenty of room for swaps and trackables.
From here, continue along the footpath and when you get to the road, cross over. Follow that path to the church. Take the right fork, go round the church and then turn right, into the field. The waymarkers take you to the far left hand corner, and #4.
Congratulations to Bazhornet for FTF
Oh, and bonus points to anyone who gets the pun. 