Poulnabrone

Poulnabrone is a portal tomb in the region known as the Burren, County Clare, Ireland and the oldest dated megalithic monument in the land. The name means "Hole of the Quern Stones", but the site is also commonly referred to as "Hole of the Sorrows". Dated to c. 4200 BCE it stands 5.9 feet high (1.8 meters) and 12 feet (3.6 meters) long in a field surrounded by the karst stone formations which make up the Burren. It is defined as a dolmen: a single-chamber, megalithic tomb distinguished by a capstone resting on upright stones.