位于(yu)固(gu)原縣(xian)(xian)七營鄉以北(bei)5公(gong)里的北(bei)嘴村。城(cheng)(cheng)(cheng)東西寬600米(mi)(mi)(mi)(mi)，南(nan)北(bei)長(chang)650米(mi)(mi)(mi)(mi)，有(you)(you)內城(cheng)(cheng)(cheng)，南(nan)北(bei)寬450米(mi)(mi)(mi)(mi)，東西長(chang)550米(mi)(mi)(mi)(mi)。城(cheng)(cheng)(cheng)內東北(bei)角有(you)(you)100米(mi)(mi)(mi)(mi)見(jian)方(fang)的小城(cheng)(cheng)(cheng)堡，外(wai)有(you)(you)甕城(cheng)(cheng)(cheng)，長(chang)96米(mi)(mi)(mi)(mi)，寬36米(mi)(mi)(mi)(mi)。現存(cun)城(cheng)(cheng)(cheng)墻高1—5米(mi)(mi)(mi)(mi)，頂寬1米(mi)(mi)(mi)(mi)，基(ji)寬9．5米(mi)(mi)(mi)(mi)。據(ju)載：此(ci)城(cheng)(cheng)(cheng)建于(yu)隋，大(da)業初，為他樓縣(xian)(xian)治。唐(tang)神(shen)龍(long)元年(nian)（公(gong)元701年(nian)）廢，改(gai)蕭關縣(xian)(xian)。大(da)中五年(nian)（公(gong)元852年(nian)）治五州。經宋、元，廢于(yu)明萬歷年(nian)間，該(gai)城(cheng)(cheng)(cheng)系固(gu)原保存(cun)較(jiao)好(hao)的一座古城(cheng)(cheng)(cheng)址。
我心明亮 
