While there is only one complete Dolmen (Korean word meaning rock propped up by other rocks) on this site, it is the largest in Korea. Dolmen on Ganghwa Island (Ganghwado) number about 150, however several thousand exist at Gochang and Hwasun. The Dolmen at the three mentioned sites are UNESCO World Heritage listed. Take the bus from Seoul to Ganghwa, then Ganghwa to Hajeom getting off at Goindol (although a taxi from Ganghwa to Goindol is not expensive).