In Gogeum-do, dolmen are dispersed throughout the region, and the Cheongyong, Chunghak and Deokam-ri dolmen especially are used as important historic evidences researching about the Bronze Age as 54 of them are concentrated within 200m perimeter.
They are divided in 13 sections and 1 unit with 10.5cm long, 28.5m wide. There is no known fact about why this jeonjin-do has been created, but inside the battle diary, there is evidence of Jakdae (marine military force organization) of 4th year of King Jeong-Jo in 1780. Therefore, this document has been written after 1780s though the accurate periods cannot be found.
- Wando-gun Gogeum-myun Cheongyong-Gyoseong-ri