https://www.independent.co.uk/news/science/archaeology/spain-stone-age-dolmen-de-menga-b2602888.html?utm_source=newsshowcase&utm_medium=discover&utm_campaign=CCwqFwgwKg4IACoGCAowzdp7ML-3CTCQm5YDMIHvvwM&utm_content=bullets
Contrast this with the recent stonehenge discussion
We might note moving a 100 tonne rock 850m is a slightly different challenge to six tonne one several hundred miles. It is impressive, though. Just quarrying such big rocks with available tools is pretty epic.
100 tonne is biblically heavy