Prehistoric people transported 2-tonne stone by boat
Prehistoric people transported 2-tonne stone by boat
www.newscientist.com
Prehistoric Spanish people transported 2-tonne stone by boat
An analysis of the provenance of the Matarrubilla stone, a large megalith at Valencina in Spain, indicates that the monument’s builders must have had advanced seafaring technology
Though a quick search says we've likely had at least makeshift boats for as long as 50 to 60 thousand years so kinda broad span if 3000 bc is the first written history(egyptians, 5k years)
If the monument was built around 5 thousand years ago i guess the timeline suggests there were more advanced boats earlier than we thought, so that's kinda cool
There's a link in the post that will help you access the full article.
Concerning your question, I think the answer would be in the following segment:
For details, here is the paper.