Bangha-ri Kobun-gun is in right across the Dundeok-myeon Georim-ri. Highland is well developed in south of Bangha Village and it is now cultivated as crop field. Here, many earthenwares from Three Kingdoms Period and Goryeo Period. In mountain that is 500~600m away from this village, there are tombs, sized a diamter of 10m and height of 2~3m. But no treasures are found, since most of them were robbed.

2. Suryeongni dolmen

When you go over a hill from Haksan-ri, following the road, there is Suryeongni Naepyeong Village. In left side of the entrance, there are two dolmens. In dolmen 'A', no memorial stone is found. In dolmen 'B', the stonetable of the tomb is cracked into two pieces. Here, the memorial stone wasn't identified but it was confirmed that many stones were covered up by grass. After the stone was reconnected, the size happened to be 185cm long, 125cm wide and 950cm thick. No treasure was found but it is suspected that there were residence here in Bronze Age.

3. Hwadobongsudae

In between Dundeok-myeon Hansando(island), there is a small island called Banghwado(island). Here, a beacon mound was built and was used as fortress during the war against Japan. Also, it was utilized as strategic base to deceive the Japanese army using lights.

The word Banghwado(island) does come from its history of having the beacon mound in it, but it is also from the fact that lights were burned all over the island during the war against Japan, so that it looked as if the island is fully armed, which helped to defeated the enemy. So it's also called Hwado(island). Most of the original beacon mound is destroyed but some traces are left.