Over the years I have walked past this location always wrongly assuming it was something completely different. That is of course till I noticed that the entry point wasn't secure. Well it would have been rude and unbritish to not take a butcher's. What a lovely surprise. I proceeded inside to what I initially perceived may have been an ARP or dressing station due to the supportive steel rings with corrugated shuttering. Waiting a moment to ensure no one else was inside exploring or perhaps working, I started to chill realising I had this gem all to myself. As I went further in it was apparent that construction was not made with tall people in mind (my poor back)!! From the entrance 50 steps down lead to a 190 feet long tunnel which ends with a 12 feet diameter vertical chalk shaft running both above to Casemate Level and below the tunnel where water level is reached after 25 feet (and if you fall into this bad boy then ya ain't getting out). Casemate waste drains fed into a brick-lined shaft that was tunnelled through the cliff to connect the underground barracks latrines to the sea.