I was parked on the sea front to take a picture of a WW2 bunker when I noticed another one on the background hidden by lots of vegetaion.I got closer and it's actually a group of large mostly underground bunkers.I found the entrance behind some thick bushes.
I was on my way back from the dentist, I didn't plan to go underground to visit some scary dark concrete chambers.
I thought I would just take a few pics of the outside as you cant usually go inside ... then I found the door and couldn't not inside.
I lost count of how many rooms it has, it go in several directions.Maybe 8 or 10 big rooms.Most of them still have steel doors.
I even found one I think is the escape tunnel but I didnt go there, its tiny and I just had my small EDC light with me (no backup light, helmet, gloves and such ... so kinda scary to go in a tiny tunnel like that.