The park was once an estate owned by the Archdale family, who arrived in 1614 during the Plantation of Ulster. The original castle was destroyed during the Irish Rebellion of 1641 and again in 1689, during the Williamite wars. In the 18th century, a mansion was built, but all that now remains is a huge cobbled courtyard surrounded by white outbuildings, housing an information centre and tearooms. The ruins of the old castle itself are situated in the old area of the park.
Along the path that the cache is on, you will see lots of references to ammo hides and fuel depos that was used during World War II when Castle Archdale housed up to 2,500 people and was a major base for flying boats. PBY Catalinas and Short Sunderlands flew from Castle Archdale to protect Atlantic shipping from German U-boats. Today's caravan site sits on the concrete maintenance area where aircraft were serviced, and a museum in the park holds exhibits from the World War II period.
When found, please replace it where you find it so that it is not found by muggles!
Warning: Data on the phones around Castle Archdale can be patchy and the only phone signal that can be picked up is O2. Please also be aware that the GPS can be a little 'jumpy' because of the tree cover.