This is a microtube tube placed in a position that we have looked at recently, we wondered what the strange object was adjacent to GZ and after having it explained to us, thought that the cache container was suitably apt.
The cache is at the posted co-ordinates and we would recommend parking in Oldfield Dr, as the main road tends to be quite busy.
Whilst here why not enjoy the views of the Dee estuary and take a short walk to grab our other cache if you haven't already.
Stealth maybe required when retrieving the cache.