ORKNEY, SCOTLAND—A rare, almost complete underground building dating to the Bronze Age has been discovered on the periphery of the prehistoric Links of Noltland, an archaeological site on the island of Westray. The building may have been used as a sweat house or sauna and for ritual activities. It may also have served as a place where women could give birth, and the sick and elderly could come to die. “We know this was a large building, with a complex network of cells attached to it and a sizeable tank of water in the central structure which would likely have been used to produce boiling water and steam—which could have been used to create a sauna effect,” Rod McCullagh of Historic Scotland said in a press release. Heated stones would have been placed in the tank to heat the water. “What this would have been used for we don’t know exactly but the large scale, elaborate architecture and sophistication of the structure all suggest that it was used for more than just cooking,” McCullagh explained. To read more about archaeology on Orkney, go to "Neolithic Europe's Remote Heart."