據介紹,潼(tong)(tong)關(guan)(guan)為中國(guo)古代著名的關(guan)(guan)隘之(zhi)一,位于秦(qin)、晉、豫(yu)三(san)省要沖的黃河、渭河交匯處南岸臺地上。據文獻記載,潼(tong)(tong)關(guan)(guan)在東(dong)漢以前還未設關(guan)(guan)城(cheng),東(dong)漢末年(nian),曹操為防御關(guan)(guan)西(xi)兵(bing)亂,于建安元年(nian)(公元196年(nian))始設潼(tong)(tong)關(guan)(guan),同時廢棄函谷關(guan)(guan)。到隋大業七年(nian)(611年(nian)),移關(guan)(guan)城(cheng)于南北連城(cheng)間的坑獸檻谷,即禁溝口。唐天授二年(nian)(691年(nian)),又遷隋潼(tong)(tong)關(guan)(guan)城(cheng)于黃、渭河南岸。1959年(nian)因修建三(san)門峽水庫(ku),潼(tong)(tong)關(guan)(guan)城(cheng)搬遷而廢沒。
潼(tong)(tong)關十(shi)(shi)(shi)二連(lian)(lian)城(cheng)(cheng)是當地著名的(de)(de)文(wen)物遺址(zhi),又名烽(feng)(feng)火臺,俗稱墩臺,位于距潼(tong)(tong)關縣城(cheng)(cheng)東(dong)約三(san)公里的(de)(de)禁溝西岸。此次(ci),他(ta)們在十(shi)(shi)(shi)二連(lian)(lian)城(cheng)(cheng)烽(feng)(feng)火臺遺址(zhi)沿線獲得重要發現(xian)——在距離“北(bei)七烽(feng)(feng)火臺遺址(zhi)”西北(bei)20米處(chu)的(de)(de)禁溝崖(ya)壁上,發現(xian)了(le)約15厘米厚的(de)(de)漢代(dai)(dai)建筑材料(liao)堆(dui)積(ji)層,現(xian)場出土(tu)了(le)繩紋板瓦等遺物。十(shi)(shi)(shi)二連(lian)(lian)城(cheng)(cheng)烽(feng)(feng)火臺遺址(zhi)為(wei)(wei)早年(nian)公布的(de)(de)省級文(wen)物保(bao)護單位,其(qi)時(shi)代(dai)(dai)原定(ding)(ding)為(wei)(wei)唐—清。后有學者認(ren)為(wei)(wei)其(qi)時(shi)代(dai)(dai)上限應在漢魏時(shi)期(qi),還有學者認(ren)為(wei)(wei)其(qi)時(shi)代(dai)(dai)當早到(dao)西周。專家組這次(ci)實(shi)地指導(dao)直接深入(ru)一(yi)線,通過細致的(de)(de)訪詢復查,解決了(le)不(bu)少疑難(nan)問(wen)題。這次(ci)的(de)(de)重要發現(xian),為(wei)(wei)十(shi)(shi)(shi)二連(lian)(lian)城(cheng)(cheng)烽(feng)(feng)火臺遺址(zhi)的(de)(de)年(nian)代(dai)(dai)定(ding)(ding)性提(ti)供了(le)珍貴的(de)(de)第一(yi)手(shou)實(shi)物資料(liao)。