Harrington Point Military Complex
The other month I went for a wander and explore at the Harington Point gun emplacements on Otago Peninsula. The site was first constructed in response to the threat of a Russian invasion in 1885 following Anglo–Russian tensions in Afghanistan. Anyway, while I was there, after scrambling up and down banks and pushing through gorse, I found one of the buildings that leads to a stairwell. From that point, it accesses other parts of the complex including subterranean communications tunnels, bunkers, observation points and a magazine and engine room.
Interesting place might still come in handy one day you never know !