Stonehenge’s enigmatic centre stone was hauled 800 kilometres from Scotland

Chemical analysis of tiny crystals in Stonehenge’s central Altar Stone suggest that it came from Scotland — and not from Wales as previously thought. The fingerprint of zircon, rutile and apatite crystals in the stone allowed it to be traced to the Orcadian Basin, which includes parts of northeastern Scotland and the Orkney Islands. Whether the six-tonne monolith was transported by land or by sea is hotly debated.