You are looking for a small, magnetic box in the middle of lower Wolvercote. If you find a box which does not make any sense in the place it is, you have probably found it.
In case the cache-hunt left you thirsty, two nice pubs are nearby and a playground for the small ones is directly opposite.
If there is no parking nearby (which can be the case on busy days) please use the car park at the meadow.