This path heads to Fawsley as part of the Knightley Way or loops back round to the village. It can be muddy, uneven and the path drops to this point from both directions (meaning it goes back up after finding!).
The container is a lock-n-lock box with room for the stamp and small trackables.
THE STAMP INSIDE SHOULD REMAIN IN THE CONTAINER - IT IS NOT A SWAPABLE ITEM.
Replace EXACTLY as found - a bit of stickoflage might help.