# Dayuling
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> Source: https://en.wikipedia.org/wiki/Dayuling
> Source revision: 1319358831
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{{short description|Mountain pass in Xiulin, Hualien, Taiwan}}
{{Infobox mountain pass
| name = Dayuling
| other_name =
| photo = Hehuanshan Tunnel.JPG
| photo_size =
| photo_alt = Hehuanshan Tunnel
| photo_caption = Hehuanshan Tunnel
| map = Taiwan
| map_alt = Location in Taiwan
| map_caption = Location in Taiwan
| map_relief =
| map_size =
| label =
| label_position =
| elevation_m = 2565
| elevation_ref =
| traversed = 20px|8 [Provincial Highway 8](/source/Provincial_Highway_8_(Taiwan))
20px|14A [Provincial Highway 14A](/source/Provincial_Highway_14_(Taiwan))
| grade_avg =
| grade_max =
| ascent =
| location = [Xiulin, Hualien](/source/Xiulin%2C_Hualien), [Taiwan](/source/Taiwan)
| range = [Central Mountain Range](/source/Central_Mountain_Range)
| coordinates = {{coord|24.1807|N|121.3100|E|type:mountain|format=dms|display=inline,title}}
| coordinates_ref =
| topo =
| embedded =
| child =
}}
thumb|Stores at Dayuling
'''Dayuling''' ({{zh|c=大禹嶺|p=Dàyǔlǐng}}, el. 2565 m), formerly '''Hehuan Pass''' ({{zh|c=合歡埡口|p=Héhuān Yàkǒu}}), is a [mountain pass](/source/mountain_pass) in [Taiwan](/source/Taiwan) transversing the [Central Mountain Range](/source/Central_Mountain_Range) between [Hehuanshan](/source/Hehuanshan) and Mt. Bilu (畢祿山), within [Taroko National Park](/source/Taroko_National_Park). Administratively, it is located in [Xiulin](/source/Xiulin%2C_Hualien), [Hualien County](/source/Hualien_County), near the border with [Nantou County](/source/Nantou_County).[{{cite web |title=大禹嶺 |url=https://www.taroko.gov.tw/zh-tw/Tourism/AttractionDetail?id=10 |website=[Taroko National Park](/source/Taroko_National_Park) |accessdate=November 21, 2019 |language=zh-tw |date=July 22, 2019 |archive-date=September 22, 2017 |archive-url=https://web.archive.org/web/20170922204441/https://www.taroko.gov.tw/zh-tw/Tourism/AttractionDetail?id=10 |url-status=dead }}]
== Description ==
Dayuling is located at the intersection of [Central Cross-Island Highway](/source/Central_Cross-Island_Highway) and [Provincial Highway 14A](/source/Provincial_Highway_14_(Taiwan)). As the highest point of the Central Cross-Island Highway, Dayuling is typically considered as the dividing point of the highway into its west and east sections. To the west, the highway passes through a short one-way tunnel known as the Hehuanshan Tunnel (合歡山隧道) before descending to Lishan. To the east, the highway passes through Tianxiang before dropping into Taroko Gorge.[{{cite news |author1=管仁健 |title=一個工程師與兩百多個老兵之死～中橫開拓史 |url=https://www.peoplenews.tw/news/8588b003-ba7c-4a42-b50e-227f72ff0bc3 |accessdate=November 23, 2019 |agency=Taiwan People News |date=September 18, 2016 |language=zh-tw}}] Meanwhile, Highway 14A branches away to the south, climbing to its peak at [Wuling](/source/Wuling_(mountain_pass)).
Dayuling's surrounding area is known for its high-altitude agriculture, producing [high-mountain tea](/source/high-mountain_tea), apples, and peaches.[{{cite web |title=解放2650 |url=https://ourisland.pts.org.tw/%E9%97%9C%E9%8D%B5%E5%AD%97/%E9%AB%98%E5%B1%B1%E8%BE%B2%E6%A5%AD |website=Our Island |publisher=[Public Television Service](/source/Public_Television_Service) |accessdate=November 23, 2019 |language=zh-tw |date=November 23, 2015}}][{{cite web |title=農產特色 |url=http://boaa.nantou.gov.tw/?page_id=37 |website=南投縣政府原住民族行政局 |accessdate=November 23, 2019 |language=zh-tw |archive-date=December 7, 2019 |archive-url=https://web.archive.org/web/20191207015332/http://boaa.nantou.gov.tw/?page_id=37 |url-status=dead }}]
== History ==
Originally, a trail was built by the [Atayal people](/source/Atayal_people) passed near Dayuling. During the [Japanese occupation of Taiwan](/source/Taiwan_under_Japanese_rule), the Governor-General of Taiwan, [Sakuma Samata](/source/Sakuma_Samata), ordered the construction of a road through the same trail as part of the [five years plan to governing aborigines](/source/five_years_plan_to_governing_aborigines) to better transport supplies in the [Truku War](/source/Truku_War).[{{cite web |author1=楊南郡 |title=《太魯閣國家公園合歡古道西段調查與步道規劃報告》 |url=http://www.taroko.gov.tw/TarokoPortal/Files/Report/554358101634_A.pdf |website=Taroko National Park |accessdate=21 November 2019 |archiveurl=https://web.archive.org/web/20071223234929/http://www.taroko.gov.tw/TarokoPortal/Files/Report/554358101634_A.pdf |archivedate=23 December 2007 |language=zh-tw}}]
After the [change of power to the Kuomintang](/source/History_of_Taiwan_since_1945), the [Nationalist government](/source/Kuomintang) began building the Central Cross-Island Highway between 1956 and 1960. [Chiang Kai-shek](/source/Chiang_Kai-shek) visited the pass in 1958, renaming the site as "Dayuling" after the story of [Great Flood of Gun-Yu](/source/Great_Flood_(China)) (Gun-Yu is alternatively known as Dayu) as a reference to the difficult construction.[{{cite web |title=大禹嶺 |url=https://www.cingjing.com.tw/trip/trip.asp?tno=86 |website=清境旅遊資訊網 |accessdate=November 21, 2019 |language=zh-tw}}]
== Geology ==
Dayuling is located within a [stratum](/source/stratum) known as the Dayuling Formation (大禹嶺層), a subset of the Bilu Formation (畢祿山層). The stratum was first identified by geologist Zhaoxia Chen (陳肇夏) in 1979. The 2,200 meter thick layer is composed of [slate](/source/slate), [phyllite](/source/phyllite), and [quartzite](/source/quartzite). [Nummulite](/source/Nummulite) fossils were found near Dayuling, the first in Taiwan. Due to the [foliation](/source/Foliation_(geology)) of the rock, the construction of Hehuanshan Tunnel at Dayuling proved to be difficult and prone to collapse.[{{cite web |title=台灣地質圖概論-台灣地質圖說明書 |url=http://basin.earth.ncu.edu.tw/Virtual%20Field%20Trip/BR/Sioulin%20Township-Western%20exit%20of%20Pilu%20tunnel.html |website=[National Central University](/source/National_Central_University) |publisher=經濟部中央地質調查所 |accessdate=November 21, 2019 |language=zh-tw |date=1968}}]
==References==
{{reflist}}
Category:Mountain passes of Taiwan
Category:Landforms of Hualien County
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Adapted from the Wikipedia article [Dayuling](https://en.wikipedia.org/wiki/Dayuling) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Dayuling?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.