Situated on high ground above L'Eree, on Guernsey's west coast, and spread over an area approximately 1km by 0.75 km lies the remains of Batterie Mirus. The largest guns to be emplaced on the Channel Islands. Most of the structures remain. All four of the gun emplacements together with adjoining accommodation are intact.
- Weapon: 4 x 30.5cm Naval Guns
- Type: Fortress Emplacements