Well, they were once a part of the coastal defences in the area, sitting probably ~5 m over the sea, but through the years, the sea has been eating up the ground beneath them, causing them to tumble down on the beach, and in some cases even topple over.
Yeah, it gives off a bit of a post-apocalypic look. Being the ruin romantic that I am, I can't help but find an inherent beauty in them.
Hmm, speaking of post-apocalyptic, I should seek to incorporate something like this in the post-apocalyptic setting I'm sketching up in my head. Who knows, I might end up incorporating it in a game or roleplaying campaign...
Yeah, most of them were too far out into the see or had their entrances too high off the ground to permit entrance, but exploring them was quite a blast.
And the best preserved bunker of them all (in the two overview shots, it's the one with a large patch of grass on the top that mum is sitting next to) didn't look like it'd aged a day, while the most worn one was cracked open and crumbling to pieces (we have a few pictures of it, and it looks quite dramatic, but I had to limit myself at some point). The difference just makes it even more dramatic.
Also, Serps, your mountains makes me so envious. If you'd let me out among them, you'd never get me down again. Ever.