Why it matters
The bluestones are Welsh; in 2024 the Altar Stone was traced to northeast Scotland, 750+ km away — implying astonishing long-distance Neolithic transport.
What mainstream says
Sourcing accepted; human-versus-glacier transport and the exact outcrop stay open.
Graded Grounded · A on the Ancient Code honesty scale (A grounded · C contested · S speculation · U unidentified). It belongs to the The sky line of evidence.
Sources & further reading
The authoritative reference for this site/finding — and its own primary citations — so you can check us.