06/11/2026
They didn’t build the pyramids in Ireland… so how did our ancestors move a 100-tonne stone?
At Brownshill Dolmen in County Carlow sits the heaviest capstone in Europe.
The giant stone is estimated to weigh around 100 tonnes.
What makes it even more mysterious is that it was placed there over 5,000 years ago, long before cranes, engines, or modern machinery existed.
The monument was built as a portal tomb, but nobody knows exactly how the massive capstone was transported and lifted into place.
Thousands of years later, it still stands as a challenge to everything we think we know about prehistoric engineering.
Was Brownshill Dolmen the work of forgotten genius, or do we still underestimate what ancient people were capable of? 🤔
