Your guide will provide you with information on the construction and use of this facility during WW2. As you walk through the many tunnels, you will be shown various interesting areas which without a guide you may unwittingly walk past. This site also houses some interesting exhibitions, and has aerial footage photographs from WW2 of various areas around the Bailiwick of Guernsey.
Tour Price £14, includes the entrance fee (value £6pp for adults).