Dolmen

The word Dolmen means stone table in Breton.
Most were built around 2000 BC along Ireland's East Coast.

The most obvious of early Stone Age tombs are dolmen.
A large slab top three or more large stones. They can
weigh up to 100 tons. It was an enormous feat
of engineering. There are more than 1400 in Ireland.

They are mentioned in Irish legends too. Diarmuid
and Gráinne allegedly slept under one when they eloped.