因主(zhu)峰二巨(ju)石(shi)(shi)并舉,遠望狀如馬耳,故(gu)名(ming)。山(shan)勢為(wei)東西走向(xiang),由片麻巖、花崗(gang)巖構(gou)成。五老峰、松(song)朵峰、鴿崖峰等奇峰高峙競(jing)秀,山(shan)間嵐氣靄(ai)靄(ai),泉水淙淙。山(shan)坡林木覆蓋,荊榛遍生。山(shan)石(shi)(shi)嶙峋,山(shan)勢陡峭,但有(you)(you)(you)(you)(you)曲徑通幽。這(zhe)(zhe)兒有(you)(you)(you)(you)(you)仙(xian)(xian)人洞(dong)、龍(long)王(wang)泉、隱龍(long)寺(si)、石(shi)(shi)龍(long)寺(si)、齊(qi)長(chang)(chang)(chang)(chang)城(cheng)(cheng)(cheng)(cheng)和橋上莊等勝跡(ji)。據唐代(dai)文學蕭(xiao)穎士《馬耳山(shan)記(ji)》記(ji)載,仙(xian)(xian)人洞(dong)為(wei)東晉(jin)人葛洪曾隱居煉(lian)丹之地。隱龍(long)寺(si)、石(shi)(shi)龍(long)寺(si)為(wei)北魏正光時所建,至清(qing)末仍(reng)完好,今(jin)(jin)已廢圯,公(gong)存遺址。山(shan)脊處(chu)有(you)(you)(you)(you)(you)橫亙綿延的(de)(de)齊(qi)長(chang)(chang)(chang)(chang)城(cheng)(cheng)(cheng)(cheng)。據酈道元《水經注》記(ji)載:“山(shan)上有(you)(you)(you)(you)(you)長(chang)(chang)(chang)(chang)城(cheng)(cheng)(cheng)(cheng),西接岱(dai)山(shan),東連瑯琊巨(ju)海(hai),千里(li)余里(li),蓋田氏所造也。”《竹書紀年》記(ji)載:“齊(qi)長(chang)(chang)(chang)(chang)城(cheng)(cheng)(cheng)(cheng)”為(wei)周顯王(wang)十(shi)八年(公(gong)元前351年)筑建,至今(jin)(jin)已有(you)(you)(you)(you)(you)2349年的(de)(de)歷(li)史。今(jin)(jin)有(you)(you)(you)(you)(you)些(xie)地段(duan)(duan),殘址凸出(chu)地面(mian)1米左右,寬10米左右,基礎多(duo)以塊石(shi)(shi)壘砌。其上以沙土(tu)夯筑。每遇(yu)溝(gou)壑以巨(ju)石(shi)(shi)填(tian)筑。曲折蜿蜒,高低綿亙,十(shi)分壯(zhuang)觀。“齊(qi)長(chang)(chang)(chang)(chang)城(cheng)(cheng)(cheng)(cheng)”經歷(li)的(de)(de)諸城(cheng)(cheng)(cheng)(cheng)段(duan)(duan),西自郝戈莊的(de)(de)馬耳山(shan),東延至皇華鎮的(de)(de)龍(long)灣(wan)頭(tou),再(zai)延至石(shi)(shi)門鄉的(de)(de)馬山(shan)后,桃園鄉的(de)(de)臺家溝(gou)南(nan)嶺(ling),然后入(ru)膠南(nan)市(shi)境,全長(chang)(chang)(chang)(chang)30多(duo)公(gong)里(li)。打(da)開乾隆《諸城(cheng)(cheng)(cheng)(cheng)縣志·總圖》可見,馬耳山(shan)與(yu)喜鵲嶺(ling)之間為(wei)“黃草關(guan)”。這(zhe)(zhe)是“齊(qi)長(chang)(chang)(chang)(chang)城(cheng)(cheng)(cheng)(cheng)”一道險峻的(de)(de)關(guan)隘。
馬(ma)(ma)耳(er)山(shan)位于諸(zhu)城(cheng)城(cheng)南(nan)50里與(yu)五蓮縣(xian)(xian)交(jiao)界處,海拔706.6米,占地40平(ping)方公里,為魯(lu)東南(nan)第(di)一高山(shan),因主峰(feng)雙石并舉、狀如馬(ma)(ma)耳(er)得名(ming),自(zi)(zi)古為山(shan)東名(ming)山(shan)。據清(qing)乾隆《諸(zhu)城(cheng)縣(xian)(xian)志(zhi)·山(shan)川考》載:“縣(xian)(xian)境(jing)山(shan)以(yi)(yi)百計,而馬(ma)(ma)耳(er)居岡脈(mo)之(zhi)(zhi)(zhi)脊(ji),南(nan)北(bei)諸(zhu)山(shan)脈(mo)絡之(zhi)(zhi)(zhi)不屬焉者無幾也(ye),以(yi)(yi)是標準之(zhi)(zhi)(zhi)可(ke)晰矣(yi)。水以(yi)(yi)數十計,自(zi)(zi)馬(ma)(ma)耳(er)山(shan)以(yi)(yi)南(nan)皆南(nan)流以(yi)(yi)達(da)于海,馬(ma)(ma)耳(er)以(yi)(yi)北(bei)皆北(bei)流入濰,以(yi)(yi)是界劃之(zhi)(zhi)(zhi)可(ke)晰矣(yi)。”
馬(ma)(ma)耳山(shan)屬(shu)泰沂山(shan)脈(mo),南(nan)靠五蓮山(shan)、九仙山(shan)、北與常(chang)山(shan)遙(yao)相互,它們同(tong)出(chu)一脈(mo),相接(jie)相連,相得益彰。山(shan)中奇石突兀,峭(qiao)壁(bi)嶙峋,山(shan)勢(shi)陡(dou)峭(qiao)而險峻,自古為諸(zhu)城南(nan)境之屏障。聳于馬(ma)(ma)耳山(shan)巔(dian)者為馬(ma)(ma)耳峰(feng)(feng),西有五老峰(feng)(feng)、大米山(shan)、小(xiao)(xiao)米山(shan)、佛頂山(shan)、大珠山(shan)、小(xiao)(xiao)珠山(shan),東有松朵(duo)(duo)峰(feng)(feng)、鵓鴿崖,其南(nan)還(huan)有羊鼻峰(feng)(feng)、馬(ma)(ma)鞍口(即風磨口)、石人山(shan)、黃(huang)朵(duo)(duo)山(shan)、黑(hei)峰(feng)(feng)尖等(deng)。山(shan)北麓有永(yong)隆寺(俗稱影龍寺、隱龍寺)、石龍寺等(deng)古剎。山(shan)中還(huan)有一線天(tian)、鬼見愁、試劍石、鱷魚石、鷹居崖、菩薩頂、望海樓、滴水(shui)洞、凌云峰(feng)(feng)、黑(hei)龍潭(tan)、情人松、天(tian)外來客、太(tai)公(gong)(gong)祠、太(tai)公(gong)(gong)坊、太(tai)公(gong)(gong)亭等(deng)諸(zhu)多景點。2004年(nian)被(bei)確(que)定(ding)為省級森(sen)林公(gong)(gong)園。