Dublin City’s oldest ancient monument 

This little cist grave is known as the Knockmaree Dolmen or Linkardstown Tomb. It dates from 2500 BC  and making it the oldest monument to survive in Dublin’s center. This structure is not actually a dolmen but the remains of a ‘cist’ type burial chamber. Only 15 have been recorded in Ireland, and most of them are found on the south and east coast. This one was discovered in 1838 when workmen employed by The Commissioners of Woods and Forests were asked to remove a large ancient tumulus that measured 15 feet high and 120 feet in circumference. Within it, 4 small stone cists were found containing urns of baked clay, food vessels, and pieces of burnt bone. These remaining stones were at the very center of the mound and no passageway led to them. The capstone is worn by water and is believed to have come from the nearby River Liffey. The remains of 2  male skeletons were found in crouched positions and analysis showed they were approx 40 & 50 years old and grave goods including a flint knife, shell necklaces, and a bone toggle.

Thanks to Itsmyireland for video