云(yun)中(zhong)(zhong)(zhong)(zhong)郡故城(cheng)遺(yi)址(zhi)南墻長1920米,殘(can)高4.5米,寬6.5米,夯層(ceng)厚8~12厘米。城(cheng)墻夯土中(zhong)(zhong)(zhong)(zhong)含有戰國(guo)至西漢(han)陶(tao)片,外層(ceng)夯土還夾雜北朝(chao)遺(yi)物。城(cheng)內地表散布的陶(tao)片瓦礫(li)大都是漢(han)魏(wei)北朝(chao)遺(yi)物,下土中(zhong)(zhong)(zhong)(zhong)有戰國(guo)、秦代遺(yi)存。西南隅散布有石柱礎、磚瓦等北朝(chao)遺(yi)物,原為一方形小城(cheng),當是官署所在。城(cheng)西墻外有古墓群,曾發掘東漢(han)閔氏壁畫墓一座。史載戰國(guo)趙武靈王曾于陰山河曲(qu)筑(zhu)城(cheng),"晝(zhou)見(jian)群鵠游于云(yun)中(zhong)(zhong)(zhong)(zhong)",因名城(cheng)為"云(yun)中(zhong)(zhong)(zhong)(zhong)",當是此城(cheng)。秦置云(yun)中(zhong)(zhong)(zhong)(zhong)郡,城(cheng)為郡治,漢(han)因之,魏(wei)設(she)云(yun)中(zhong)(zhong)(zhong)(zhong)縣。此為內蒙古西部地區早建立的城(cheng)池。
為做好云中郡故城的文物保護(hu)(hu)工作,托克托縣文體局邀(yao)請有關(guan)部門和(he)(he)單(dan)位對(dui)云中郡故城文物保護(hu)(hu)情況(kuang)進(jin)行(xing)評估,并(bing)編(bian)制相關(guan)保護(hu)(hu)規劃工作綱要(yao),旨在使遺址得到(dao)延續性保護(hu)(hu)、利(li)用、管理和(he)(he)研(yan)究。