Seolbong mountain is in the Icheon, and about 30,000 pyeong high lands is the site of ancient cattle which has Kalrock in the center with 7 - 8 ridge.  Seolbong Mountain Fortress wall is mostly made of soil and only some parts are mixed with stone. The stone fortress wall is mostly crushed and broken, however, the end of fortress wall at the top of mountain still has 3~10m of stone wall. In the west ridge under the top place, the foundation stone still maintain its original shape, so this place looks like a defense area. Also 3 stone pile areas which were used for the stone war and the rock that has hole to put flag can be found. There is some evidence of 2 wells which are necessary for the cattle and north side door which is close to the water door.