Gwernvale is an example of a Severn-Cotswold long barrow where only the chamber (minus capstone) remains. Mind you, they did build a road across the edge of it. Aren't most extant chambered tombs just what's left once the mound/cairn has been removed really?
It looks as though Frances Lynch (yay, but RIP, boo) had a good look at it, she was the foremost chambered tombs expert/nutcase.
The circular "kerb" in some of the 90s photos on here looks a bit suspect - are the stones even earthfast?
Anyway, I'm only putting off going to sleep in the self-delusion that it's not time to get back to work, so enough rambling!
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