Transformers: The Last Knight filmed at Ystrad Quarry, Trefil. The final battle plays out in this disused quarry, extended with computer effects. On screen it's Final battleground.
Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer.
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Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in Trefil and it tells you what was shot around you, how to get there, and whether you can actually go in.
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