This mesh bag-shaped iron artifact was unearthed at the 2nd fort of Mudeung-ri in Yeoncheon Mudeung-ri. When first discovered, it was assumed to be a type of horse decoration featuring a flagpole support. However, it is different in shape from the flagpole support horse decorations found in Silla and Gaya tombs. No other objects of the same shape have been excavated so far, so the purpose of this artifact remains unknown