Five concrete structures on the hilltop east of Mt Pleasant in Christchurch represent a command post and four gun positions. They are the remains of a World War II (1939-1945) Heavy Anti-aircraft Artillery (HAA) battery.
The structures are much as they were when they were decommissioned by the army after the war.
From Lyttelton take Chambers Track, which starts from the top of Brenchley Avenue. This is a steep climb up a valley through Tauhinu-Korokio Scenic Reserve, to reach the gun emplacements.
A more gentle route takes you along an old army 4WD track across city council land. This track starts at lookout point on the Summit Road, (near its intersection with Mt Pleasant Rd).