"Cromlechs, table-stones, generally consisting of one large flat stone supported by others which are upright. The cromlech is also named Dolmen, from Taal, or Dual, a table, and Maen, a stone." — Encyclopedia Britanica, 1893

Dolmen

"Cromlechs, table-stones, generally consisting of one large flat stone supported by others which are…

A portal tomb or grave.

A Dolmen

A portal tomb or grave.