Megalithic: The Poulnabrone Dolmen, the Hole of Sorrows The Poulnabrone Dolmen (German: the hole of sorrows) is one of the most famous megalithic complexes in Ireland and was built around 3800 BC. built. Country Ireland Read more about Megalithic: The Poulnabrone Dolmen, the Hole of Sorrows701 views Copied to clipboard