赤(chi)城(cheng)山(shan)(shan)(shan)(shan)(shan)又稱燒山(shan)(shan)(shan)(shan)(shan),在浙江天臺(tai)西北,為天臺(tai)山(shan)(shan)(shan)(shan)(shan)南門。海拔306.5米,為丹霞地(di)貌(mao),是歷代高(gao)僧名道(dao)的修身(shen)之(zhi)處,濟公活佛故里。因山(shan)(shan)(shan)(shan)(shan)上(shang)赤(chi)石(shi)(shi)屏(ping)列如(ru)城(cheng),望之(zhi)如(ru)霞,故名。山(shan)(shan)(shan)(shan)(shan)有石(shi)(shi)洞十二(er)以紫云洞和(he)玉京洞最著。山(shan)(shan)(shan)(shan)(shan)頂有赤(chi)城(cheng)塔,為南朝梁岳陽(yang)王妃(fei)所建。
今“赤(chi)城(cheng)棲霞(xia)起而建標”,唐李白(bai)《夢(meng)游(you)天(tian)(tian)姥(lao)吟留別》詩:“天(tian)(tian)姥(lao)連天(tian)(tian)向天(tian)(tian)橫(heng),勢(shi)拔五岳掩赤(chi)城(cheng)。”《大清(qing)一統志.臺州府一.山川》:“赤(chi)城(cheng)山,在(zai)天(tian)(tian)臺縣北六里(li)。’支遁《天(tian)(tian)臺山銘序》:‘住天(tian)(tian)臺者,當由赤(chi)城(cheng)山為(wei)道徑。孔(kong)靈符《會稽記》:‘赤(chi)城(cheng)山,土色(se)皆(jie)赤(chi),狀似云(yun)霞(xia),望之(zhi)如雉堞。’......舊志,一名(ming)燒(shao)山,西有玉京(jing)洞(dong)。道書以為(wei)第(di)六洞(dong)天(tian)(tian),名(ming)上玉清(qing)平之(zhi)夭(yao),即天(tian)(tian)臺之(zhi)南門。”
唐(tang)司馬承(cheng)禎《上清天地宮(gong)府圖(tu)經》和杜光庭(ting)《洞天福地岳瀆名山記》等道書所據:
第六(liu)赤城(cheng)山(shan)洞,號(hao)“上(shang)玉(yu)清平山(shan)”(《天地宮(gong)府(fu)圖》作(zuo)“上(shang)清玉(yu)平之(zhi)洞天),在唐興縣(xian)(今浙江天臺)。
赤城山古(gu)稱道教十(shi)大洞(dong)天(tian)之六,為一(yi)天(tian)然洞(dong)穴,洞(dong)深10米(mi),寬(kuan)7米(mi)。洞(dong)內隨巖構造三(san)開(kai)間(jian)樓(lou)房,周圍植有松柏,鑿有古(gu)井(jing)。相傳(chuan)晉(jin)代魏華存夫(fu)人(ren)于(yu)此(ci)棲養修真,得黃庭內外(wai)景(jing)二冊自古(gu)號曰黃庭經(jing),為丹(dan)經(jing)絕(jue)品(pin)。