城子山(shan)(shan)山(shan)(shan)城位(wei)于敖漢旗(qi)薩力巴鄉哈拉(la)溝(gou)村東(dong)南4公里(li)的(de)(de)東(dong)山(shan)(shan)上,與瑪尼罕鄉交界處。因山(shan)(shan)之(zhi)頂部有石砌圍墻如(ru)城,故名“城子山(shan)(shan)”,山(shan)(shan)城之(zhi)西(xi)北3公里(li)處是(shi)薩仁(ren)諾(nuo)爾月(yue)(yue)芽(ya)湖旅游區(qu),東(dong)北10公里(li)是(shi)遼代降圣州佛塔(ta),南與旗(qi)政府所在地——新惠鎮僅30公里(li)。其鄰(lin)近山(shan)(shan)頭環繞錯落有致(zhi),如(ru)眾星(xing)拱月(yue)(yue)般的(de)(de)遺址,以城子山(shan)(shan)為中心,形成(cheng)了一個15平方公里(li)的(de)(de)人文(wen)和山(shan)(shan)水(shui)風光旅游區(qu)。
城(cheng)(cheng)(cheng)子山(shan)(shan)山(shan)(shan)城(cheng)(cheng)(cheng)為(wei)橢圓(yuan)長方形(xing),平(ping)面(mian)呈(cheng)不規(gui)則的“亞”字(zi)形(xing)。城(cheng)(cheng)(cheng)北(bei)、東(dong)(dong)、西(xi)(xi)(xi)三面(mian)略(lve)呈(cheng)圓(yuan)形(xing),南側(ce)略(lve)呈(cheng)長方形(xing),城(cheng)(cheng)(cheng)頂地勢較平(ping),西(xi)(xi)(xi)北(bei)略(lve)高,東(dong)(dong)南略(lve)低(di),主(zhu)梁(liang)總(zong)(zong)長2.2公里(li)(li),呈(cheng)西(xi)(xi)(xi)北(bei)至東(dong)(dong)南走向,西(xi)(xi)(xi)側(ce)有(you)7道(dao)山(shan)(shan)梁(liang),東(dong)(dong)側(ce)有(you)3道(dao)山(shan)(shan)梁(liang)均與(yu)主(zhu)梁(liang)相接,最寬(kuan)約3公里(li)(li),山(shan)(shan)頂主(zhu)峰的中心(xin)城(cheng)(cheng)(cheng)址總(zong)(zong)面(mian)積達15萬(wan)平(ping)方米(mi),山(shan)(shan)城(cheng)(cheng)(cheng)的四周(zhou)(zhou)砌(qi)(qi)筑著(zhu)石(shi)(shi)(shi)圍墻(qiang),并有(you)石(shi)(shi)(shi)砌(qi)(qi)護坡,全城(cheng)(cheng)(cheng)設有(you)9門(men)(men),石(shi)(shi)(shi)墻(qiang)周(zhou)(zhou)長1310米(mi),寬(kuan)2米(mi)。從城(cheng)(cheng)(cheng)內平(ping)面(mian)布局和地表石(shi)(shi)(shi)砌(qi)(qi)遺(yi)跡(ji)看,可(ke)分(fen)為(wei)6個區(qu)(qu),即中心(xin)區(qu)(qu)、東(dong)(dong)區(qu)(qu)、北(bei)區(qu)(qu)、西(xi)(xi)(xi)區(qu)(qu)、南區(qu)(qu)、東(dong)(dong)南區(qu)(qu),區(qu)(qu)與(yu)區(qu)(qu)之(zhi)(zhi)間(jian)又有(you)石(shi)(shi)(shi)墻(qiang)相隔(ge),以(yi)門(men)(men)道(dao)相通出入,其(qi)中主(zhu)墻(qiang)內側(ce)6個區(qu)(qu)共有(you)圓(yuan)形(xing)石(shi)(shi)(shi)砌(qi)(qi)建筑228個,主(zhu)墻(qiang)外側(ce)分(fen)布4個,共計232個。在城(cheng)(cheng)(cheng)北(bei),東(dong)(dong)均發現厲石(shi)(shi)(shi)群、磨光圓(yuan)窩石(shi)(shi)(shi)塊。城(cheng)(cheng)(cheng)西(xi)(xi)(xi)南發現一巨型石(shi)(shi)(shi)雕(diao)豬(zhu)首,雕(diao)鑿簡潔流暢,棱線分(fen)明(ming)、吻部噘起,大(da)嘴張開,雙目圓(yuan)睜(zheng),神態(tai)逼真,朝向正南方7公里(li)(li)之(zhi)(zhi)遙的鴨雞山(shan)(shan)。
城子山(shan)(shan)山(shan)(shan)城經中(zhong)國社(she)會科學(xue)院(yuan)、考古研(yan)究(jiu)所和(he)敖(ao)漢旗聯合調查、測繪,認(ren)為(wei)(wei)此類(lei)山(shan)(shan)城是中(zhong)國北(bei)方地(di)區(qu)迄今為(wei)(wei)止(zhi)面積(ji)大、保存(cun)完整(zheng),暴(bao)露遺跡清(qing)晰,結構復雜(za)的(de)一處(chu),也(ye)是目前發現的(de)東北(bei)地(di)區(qu)夏家(jia)店下層文化較(jiao)大規模(mo)山(shan)(shan)城,只有國家(jia)的(de)力量才可完成這一恢宏工程,城內(nei)石圈、方院(yuan)、密布的(de)場面,學(xue)者(zhe)們認(ren)為(wei)(wei)是夏家(jia)店下層文化中(zhong)心(xin)性祭祀址。對(dui)于研(yan)究(jiu)古代(dai)社(she)會的(de)演進(jin),國家(jia)和(he)城市的(de)形成、宗(zong)教信仰、社(she)會變革均提供了重要資料。2001年(nian)由國務院(yuan)公(gong)布為(wei)(wei)全國第(di)五批重點文物保護單位。