因主(zhu)峰(feng)二巨石(shi)(shi)并舉,遠望(wang)狀如馬(ma)耳(er)(er)(er),故名。山(shan)(shan)(shan)(shan)(shan)勢為(wei)東(dong)西走向(xiang),由片麻巖、花崗巖構(gou)成。五老峰(feng)、松朵(duo)峰(feng)、鴿崖(ya)峰(feng)等(deng)奇峰(feng)高峙競(jing)秀,山(shan)(shan)(shan)(shan)(shan)間(jian)嵐(lan)氣靄(ai)(ai)靄(ai)(ai),泉水淙(cong)淙(cong)。山(shan)(shan)(shan)(shan)(shan)坡林木覆蓋(gai)(gai),荊榛遍生。山(shan)(shan)(shan)(shan)(shan)石(shi)(shi)嶙峋(xun),山(shan)(shan)(shan)(shan)(shan)勢陡峭(qiao),但(dan)有(you)曲徑通幽。這兒有(you)仙人洞(dong)、龍(long)王泉、隱(yin)龍(long)寺、石(shi)(shi)龍(long)寺、齊(qi)(qi)長(chang)(chang)城和橋上莊(zhuang)等(deng)勝跡。據(ju)唐代文學蕭穎士《馬(ma)耳(er)(er)(er)山(shan)(shan)(shan)(shan)(shan)記(ji)(ji)》記(ji)(ji)載(zai),仙人洞(dong)為(wei)東(dong)晉(jin)人葛洪曾隱(yin)居煉丹之(zhi)地。隱(yin)龍(long)寺、石(shi)(shi)龍(long)寺為(wei)北魏正(zheng)光時(shi)所建(jian)(jian),至清(qing)末(mo)仍完(wan)好,今已廢圯,公存遺址。山(shan)(shan)(shan)(shan)(shan)脊處(chu)有(you)橫亙綿(mian)(mian)延的(de)(de)齊(qi)(qi)長(chang)(chang)城。據(ju)酈道元(yuan)《水經注》記(ji)(ji)載(zai):“山(shan)(shan)(shan)(shan)(shan)上有(you)長(chang)(chang)城,西接(jie)岱山(shan)(shan)(shan)(shan)(shan),東(dong)連(lian)瑯(lang)琊巨海(hai),千(qian)里(li)余里(li),蓋(gai)(gai)田氏所造(zao)也。”《竹(zhu)書紀年(nian)》記(ji)(ji)載(zai):“齊(qi)(qi)長(chang)(chang)城”為(wei)周顯王十八年(nian)(公元(yuan)前(qian)351年(nian))筑(zhu)建(jian)(jian),至今已有(you)2349年(nian)的(de)(de)歷(li)史。今有(you)些地段,殘址凸出(chu)地面(mian)1米左右,寬10米左右,基礎(chu)多(duo)以塊石(shi)(shi)壘砌。其上以沙土夯筑(zhu)。每遇溝壑以巨石(shi)(shi)填筑(zhu)。曲折(zhe)蜿蜒,高低(di)綿(mian)(mian)亙,十分壯觀(guan)。“齊(qi)(qi)長(chang)(chang)城”經歷(li)的(de)(de)諸(zhu)(zhu)城段,西自郝戈莊(zhuang)的(de)(de)馬(ma)耳(er)(er)(er)山(shan)(shan)(shan)(shan)(shan),東(dong)延至皇華鎮的(de)(de)龍(long)灣頭,再延至石(shi)(shi)門鄉的(de)(de)馬(ma)山(shan)(shan)(shan)(shan)(shan)后(hou),桃園鄉的(de)(de)臺(tai)家溝南嶺,然后(hou)入(ru)膠南市境,全長(chang)(chang)30多(duo)公里(li)。打開乾隆(long)《諸(zhu)(zhu)城縣(xian)志(zhi)·總圖》可見,馬(ma)耳(er)(er)(er)山(shan)(shan)(shan)(shan)(shan)與喜鵲嶺之(zhi)間(jian)為(wei)“黃草關”。這是“齊(qi)(qi)長(chang)(chang)城”一道險(xian)峻(jun)的(de)(de)關隘。
馬耳(er)山(shan)(shan)位于(yu)諸(zhu)城城南(nan)50里與五蓮縣(xian)交(jiao)界(jie)處,海拔706.6米,占地40平方公里,為魯(lu)東(dong)南(nan)第一(yi)高(gao)山(shan)(shan),因主峰雙石并舉、狀如馬耳(er)得名,自古為山(shan)(shan)東(dong)名山(shan)(shan)。據清乾隆《諸(zhu)城縣(xian)志·山(shan)(shan)川考(kao)》載:“縣(xian)境(jing)山(shan)(shan)以(yi)百計,而馬耳(er)居岡脈(mo)之脊,南(nan)北(bei)諸(zhu)山(shan)(shan)脈(mo)絡之不屬焉(yan)者(zhe)無(wu)幾也,以(yi)是(shi)標準之可(ke)晰(xi)矣。水以(yi)數(shu)十計,自馬耳(er)山(shan)(shan)以(yi)南(nan)皆南(nan)流以(yi)達于(yu)海,馬耳(er)以(yi)北(bei)皆北(bei)流入濰,以(yi)是(shi)界(jie)劃之可(ke)晰(xi)矣。”
馬(ma)耳山(shan)(shan)(shan)屬泰(tai)沂(yi)山(shan)(shan)(shan)脈(mo),南(nan)(nan)靠五(wu)蓮山(shan)(shan)(shan)、九仙山(shan)(shan)(shan)、北與常山(shan)(shan)(shan)遙相(xiang)(xiang)(xiang)互,它們同(tong)出一脈(mo),相(xiang)(xiang)(xiang)接相(xiang)(xiang)(xiang)連,相(xiang)(xiang)(xiang)得益(yi)彰。山(shan)(shan)(shan)中奇石(shi)突兀,峭(qiao)壁嶙峋,山(shan)(shan)(shan)勢陡(dou)峭(qiao)而(er)險峻(jun),自(zi)古為(wei)(wei)諸城南(nan)(nan)境之屏障。聳于馬(ma)耳山(shan)(shan)(shan)巔者為(wei)(wei)馬(ma)耳峰(feng),西有(you)(you)五(wu)老峰(feng)、大米山(shan)(shan)(shan)、小米山(shan)(shan)(shan)、佛頂山(shan)(shan)(shan)、大珠山(shan)(shan)(shan)、小珠山(shan)(shan)(shan),東有(you)(you)松朵(duo)(duo)峰(feng)、鵓鴿崖,其(qi)南(nan)(nan)還有(you)(you)羊鼻峰(feng)、馬(ma)鞍口(即風磨口)、石(shi)人(ren)山(shan)(shan)(shan)、黃朵(duo)(duo)山(shan)(shan)(shan)、黑峰(feng)尖等(deng)(deng)。山(shan)(shan)(shan)北麓有(you)(you)永隆(long)寺(si)(si)(俗稱影(ying)龍寺(si)(si)、隱龍寺(si)(si))、石(shi)龍寺(si)(si)等(deng)(deng)古剎。山(shan)(shan)(shan)中還有(you)(you)一線天、鬼見愁、試劍(jian)石(shi)、鱷魚石(shi)、鷹居崖、菩薩頂、望海(hai)樓、滴水洞、凌云峰(feng)、黑龍潭、情人(ren)松、天外來客(ke)、太公祠、太公坊、太公亭等(deng)(deng)諸多景點。2004年被確定為(wei)(wei)省(sheng)級森(sen)林公園(yuan)。