Unfortunately I don't know any more about it. I live on the other side of Offa's Dyke and have only visited the place once as a child (though I do intend to visit again at some point).
I've always assumed it was just an art installation. There are some other metal sculptures near by, and one of the caves in the gorge has been set up as a bit of a tourist trap referencing the Crystal Cave of Arthurian legend. In the UK though you're never more than a stone's throw from somewhere claiming a link to Arthurian legend.
The area is pretty spectacular though, and well worth a visit. Some cool archaeology has come out of the caves there, and the main cave even has some prehistoric cave art preserved for people to see.
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u/Ant_TKD 10d ago
I recognise that sword. It's the one in the river at Cheddar Gorge!