【南投信義】丹大林道與消失的省道台16線|可徒步深入中央山脈的經典長程林道

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布農族人有這麼一句話:「濁水溪的上游,不是終點,是我們布農文化的起源」,這句話揭開 丹大林道 的旅行序幕。下面是幾年前,丹大林道還沒被媒體大肆報導前,我曾在某個冬季前往安靜的丹大林道徒步健行和野營,以及在工寮過夜的三天兩夜重裝健行紀錄。 2024.01.31更新:合流坪的鋼便橋已於今日被台電撤除了 連結: 台電施工後丹大林道「恢復」通行! 拆橋挖巨溝「車輛恐無法通過」 丹大地區 位於臺灣本島中部之濁水溪上游,行政區隸屬於南投縣信義鄉,為全國面積第二大的鄉鎮。丹大地區也是濁水溪的發源處。東側翻過中央山脈可達花蓮,南鄰玉山國家公園,西接日月潭國家風景區,北側則與仁愛鄉相接。 潭南、雙龍、地利及人和四村等區域皆位於信義鄉,著名的 丹大(孫海)林道 便位於地利村中,沿著步道往東至花蓮邊界處可與七彩湖相接。其中地利村及雙龍村面積最大,合佔本區約七成面積,人和村次之,面積最小者為潭南村 。 丹大林道周邊地圖 丹大林道路徑示意圖 日治時期西元1943年,原本預計將東部花蓮木瓜溪流域附近的水力發電廠所生產的剩餘電力運輸到西部,但因為日本在1945年戰敗後,計畫就宣告中止,1948年台灣工業急速發展,用電量大增,直到1950年獲得美國援助執行了能高路線全長45公里的69kV東西向輸電計畫。 之後為了解決花東地區電力供應問題,台電於1985年開始研究新東西輸電之路線,最後決定自南投明潭發電廠與大觀第二發電廠輸送電力至花蓮鳳林超高壓變電所,此新東西輸電線於1990年開始辦理路線中心測量,1998年完工,全長72.4公里。 沿線共有196座電塔,線路橫跨中央山脈海拔2925公尺的崇山峻嶺,並在「 七彩湖 」附近的越嶺處設有「 光華復旦 」紀念碑,西以 丹大林道 、東以 萬榮林道 為維修保線道路。 丹大林道是深入丹大地區的重要通道,1958年(民國47年),出生於現今雲林縣口湖鄉的孫海,標得林務局巒丹大事業區第八林班地檜木原始林採伐權及伐木後的重新造林權,為了進入深林,孫海沿著原本的山徑開闢出可以卡車通行的丹大林道,因此丹大林道也被稱為「 孫海林道 」。 當年為了闢築林道與運輸需要,孫海建造了一座木橋於合流坪橫跨濁水溪,之後改為水泥橋,這座橋就是著名的「 孫海橋 」。 為了伐木業而開闢的丹大林道,其終點一開始並不是在七彩湖,後半段到光華復旦碑約12公里路段,是台電為了興建東西線輸電工程,才於

Planning on taking the Yari-Hotaka traverse and Tateyama/Tsurugi-dake Circuit Trek in the Northern Japan Alps


The Japan Alps consist of three volcanic ridges that run from north to south through the central and widest part of Honshu. The home of numerous hiking areas and ski resorts, and centered around Nagano, the Japan Alps are named after the famous European mountain range because they both feature rugged glacier-carved slopes and numerous peaks over 3,000 meter.

With the exception of Mt. Fuji, which is further east, the highest mountains in Japan are located in the Japan Alps. Numerous streams running through the plateaus and between the mountains have carved out lovely gorges and ravines. Thick-wooded forests occupy the lower slopes, and of alpine flora and rugged rocky walls occupy the higher slopes.

The Hida Mountains, or Northern Alps, is a Japanese mountain range which stretches through Nagano, Toyama and Gifu prefectures. The Northern Japanese Alps is a major mountain chain slicing through the heart of Japan north to south. A number of Japan's most awesome peaks lie in this popular mountainous region, which is loved by climbers. Several 3,000-meter-high rocky peaks rise from the Hotaka Mountains as if taking turns piercing the sky. The two most popular climbing mountains, Mt. Yari and Mt. Hotaka are difficult to climb. In the past 30 years over 500 climbers have died trying to reach their summits. Yari means "spear" in Japanese and the dangerous hike to top of this mountain takes three days. The ascent of Hotaka, the third highest mountain in Japan, isn't as difficult. At the top you can often see eagles riding the thermals. Still people have died climbing it. The route from the Hotaka Mountains to Mt. Yari is revered as one of the most difficult traverse routes in Japan. 


The Kita Alps are well-travelled in the summer months and series of comfortable mountain huts, similar to those in the Alps, are well-spaced, staffed, and equiped to accomodate the throngs of Japanese hikers during the peak summer months. Mt. Oku-Hotaka (3,190 meters) , the highest of the the group, sits at the south end of a knife-ridge which connects to the famous Yarigatake (3,180 meters) mountain, aprx. 6 miles to the north. Other prominent peaks in the Hotaka massive are: Mae-Hotaka (3,090 meters), Nishi-Hotaka (2,908 meters) Kita-Hotaka (3,106 meters), and Karasawa Dake (3,110 meters). 

The Japan Alps are truly remarkable and beautiful and a developed infrastructure allows easy access. At the base of the Hotaka massive, sits the resort town of Kamikochi in the Azusa River valley. The peaks are the centerpiece of the Chubu Sangaku National Park. Alpinists relish the challenge of ascending the mountains from the western slope, which is a sheer, massive rock face. Over the years, the steep cliffs have claimed the lives of many mountaineers.

At a height of 3,180 meters, Mt. Yari (Yarigatake) has a sharply pointed summit that is shaped like a pyramid and is located in the northernmost of the group of the rocky peaks. Mt. Yari is Japan's fifth-highest peak, and called“the Japanese Matterhorn”because of its shape. Mt. Yari is so popular that it is a summit that nearly everyone aspires to climb at least once. During the summer climbing season, alpinists form a long queue waiting for their turn to summit Mt. Yari. Climbing Mt. Yari and Mt. Hotaka is very popular among Japanese and foreign climbers and was one of my dreams.


Tateyama-Kurobe Alpine Route is 90 kilometer route that is broken into nine sections and includes rides on cable railways, a highland bus, a cable car, and a trolley bus. It starts in Toyama and finished in Shinano-omachi (It's also possible to do trip in the reverse direction), and stops at Kurobe Dam. The entire journey costs about ¥11,000.

Tateyama Mountain is considers one of Japan's three holiest mountains along with Mt. Fuji and Mt. Haku and is comprised of three peaks: Oyama, Onanjiyama, and Fujinooritate. The highest is 9,892 feet. Climbing the mountain has traditionally been regarded as means of purifying the soul. For many years it was off limits to women and was climbed by 15-year-old boys to prove their manhood. 

Among the mountains of the Japanese Alps, Tsurugi-dake is maybe the most famous among experienced hikers. The reason for this is the rather difficult and exposed ascent that is possible for the average hiker only with the help of many chains, nails etc. The normal approach to Tsurugi-dake is to take the train, cable car and bus route from Toyama to Murodo. From there it is a few hours hike to the base of Tsurugi-dake. On the way, you pass the sulfuric springs that feed onsen in many of the huts in the area.

Tsurugi-dake is located in the eastern area of Toyama Prefecture, Japan. It is one of the tallest peak in the Hida Mountains at 2,999M. Based on peakery data, it ranks as the 1st highest mountain in Toyama and the 17th highest mountain in Japan. It is one of the 100 Famous Japanese Mountains, and is called "the most dangerous mountain" climbable. Before attempting this mountain make sure you have some experience and take appropriate safety equipment. Having said that the trail up to the summit is steep but good fun and you get a real sense of accomplishment when you make it to the top.

If you have only time for one area of the outdoors to explore during your stay in this country, you can’t go wrong by choosing one of the many choices the Northern Alps has to offer. I'm planning on taking the Yari-Hotaka traverse and Tateyama/Tsurugi-dake Circuit Trek in the Kita Alps this summer, it's gonna be exciting!!.


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