Perhaps not directly trade related but there's also the recent discovery that the 6 tonne Altar Stone at Stone Henge was transported there from 700km away in Sc

Perhaps not directly trade related but there's also the recent discovery that the 6 tonne Altar Stone at Stone Henge was transported there from 700km away in Scotland at around 2600BCE. https://en.m.wikipedia.org/wiki/Altar_Stone_(Stonehenge) https://en.m.wikipedia.org/wiki/Altar_Stone_(Stonehenge)