Dolmens are prehistoric tombs consisting of a big, wide cover rock and several smaller stones supporting the big cover rock.
Dolmens are called “Goindol” in Korean.
There are 230 to 500 checker board-shaped southern-style dolmens from the Iron Age on the valleys around Boseongjae Pass between Mosan Village in Hyosan-ri, Hwasun-gun and Daesin-ri, Chunyang-myeon.
Through the excavations, dolmens, stone chamber tombs, jar coffin tombs, and stone cist tombs and pit tombs have been found together with other various stone tools, earthenware, bronze tools, and ornaments.
There are traces of the cutting of a stone plate used as a cover stone for a dolmen on a stone wall.
This gives clues for research on the production process of dolmens.
On the hill in Daesin-ri is a very huge cover stone for a dolmen.
It has length of 7m, height of 4m, and weight of 200 tons.
No other cover stone in the world is as huge as this one.
The surrounding area of the dolmens has been preserved so well that the dolmens in this area are regarded as valuable remains for the comparative research on the ancient culture of the Korean Peninsula.