World War II defense for Lyttelton Harbour/Whakaraupo was established at Godley Heads gun emplacements. Twisting and exposed, it was a treacherous haul across the volcanic Port Hills to Christchurch. Warning shots were never fired, and the Big Guns were never actually installed before the war ended. Incurring considerable damage during the recent earthquakes, much of the National Heritage Site now has restricted access. Fascinating bunkers, tunnel, and trails were open to explore before the earth shook. Armoured iron door latches, frozen in time, fading and rusting away.