云(yun)(yun)中(zhong)(zhong)郡故城(cheng)(cheng)遺(yi)址南(nan)墻長1920米(mi),殘高(gao)4.5米(mi),寬(kuan)6.5米(mi),夯層厚8~12厘米(mi)。城(cheng)(cheng)墻夯土中(zhong)(zhong)含有(you)戰國至西(xi)漢陶片(pian),外層夯土還(huan)夾雜北朝(chao)遺(yi)物。城(cheng)(cheng)內地(di)表散布的陶片(pian)瓦礫(li)大都是(shi)漢魏北朝(chao)遺(yi)物,下(xia)土中(zhong)(zhong)有(you)戰國、秦代遺(yi)存。西(xi)南(nan)隅(yu)散布有(you)石(shi)柱礎(chu)、磚瓦等(deng)北朝(chao)遺(yi)物,原為一方形(xing)小(xiao)城(cheng)(cheng),當是(shi)官署所在。城(cheng)(cheng)西(xi)墻外有(you)古墓群(qun),曾發掘東(dong)漢閔氏壁畫(hua)墓一座。史載戰國趙(zhao)武(wu)靈王(wang)曾于(yu)陰山河曲筑城(cheng)(cheng),"晝見群(qun)鵠游于(yu)云(yun)(yun)中(zhong)(zhong)",因名城(cheng)(cheng)為"云(yun)(yun)中(zhong)(zhong)",當是(shi)此(ci)城(cheng)(cheng)。秦置云(yun)(yun)中(zhong)(zhong)郡,城(cheng)(cheng)為郡治(zhi),漢因之,魏設云(yun)(yun)中(zhong)(zhong)縣(xian)。此(ci)為內蒙古西(xi)部地(di)區早建立的城(cheng)(cheng)池。
為做好(hao)云中郡故城的文(wen)物保(bao)護(hu)(hu)工作,托克托縣文(wen)體(ti)局邀請有關部門(men)和單位(wei)對云中郡故城文(wen)物保(bao)護(hu)(hu)情況進(jin)行評估,并編(bian)制相關保(bao)護(hu)(hu)規劃工作綱要,旨在使遺址(zhi)得到(dao)延(yan)續性(xing)保(bao)護(hu)(hu)、利用、管理和研(yan)究。