Hasn’t it?
It did have at one time; WW2 possibly?
I know some record attempt with an electric car was held up years ago due to some unexploded ‘ordnance’ problem.
WA$.
was probably washed up stuff from the pembrey ranges. i’m from accross the estuary on the gower peninsular, and several beaches there (whitford burrows, llangennith) have problems with ordanance getting washed up there, even tenby, miles down the coast has had the odd bit of stuff from pembrey washed up on it.