From Chengdu to Inagi to go through most of the section of Sichuan Sichuan-Tibet Highway, after Yaan, Luding and other regions, but also crossing the famous Erlang.
Erlang Mountain in the days 50 kilometers west of the county, elevation 3437 meters. Each year in May, the size of azaleas in full bloom, red, blue, purple, white and off each other, flying here from time to time the plateau butterflies made her look even more glorious. Erlang has a viewing platform, is actually a cliff in the middle clip a ditch opposite Bing-layered, should be the end of ancient glaciers, solemn, solemn and quiet, wondering what was going in silence. Erlang mountain landscape is strange: the Qingyi of waves, Xigou both sides of the sound of lush pine forest, a few pieces of white clouds drifting across from time to time. In 1940, artist Chang Ta-chien, Ye Qianyu had this painting. 50's, a "Erlang" singing all over the country, from Erlang is famous for.
Erlang Mountain road winding along the slope large, narrow roads, coupled with entry and exit of vehicles, so hitting cars, overturned things have occurred. Especially in winter, from snow to become more than a foot of ice are thick and slippery roads, accidents occur more easily, when the PLA entered Tibet when repair this highway, at the expense of a lot of personnel.
To steep, well-known bad weather in the whole country the Erlang Shan, Sichuan-Tibet line is not only the first thousand miles throat Insurance Commissioner, had been known as the "natural moat." Where perennial ice and snow, heavy rain, fog, mudslides, landslides continued, causing the road traffic accident-prone, off Road frequently, combined with the year 3 / 4 as rain and snow weather, traffic and transport extremely difficult. There the local proverb: "Driving through Erlang, such as into the gate of hell, luck is not overturned, but also frozen for three days." Erlang has restricted the Ganzi Autonomous Prefecture and the Tibet regional economic and social development of the "bottleneck." Solve the "bottleneck" the only way is to get through Erlang mountain tunnel.
Fortunately, the total investment of 4.4 billion Erlang mountain tunnel project in 1996 construction. Days starting from the county as a whole tunnel Longdanxi, Luding County, do not care beyond the village, located in Erlang mountain hillside with a total length 8660 meters, 4172 meters long in which the main tunnel, the tunnel Jingkuan 9 meters, 5 meters high altitude 2182 m, is the linking of road tunnels has been the longest and highest one. Erlang Mountain Tunnel is completed, than the original Sichuan-Tibet highway mileage of 25 km shorter paragraphs Erlang Mountain, shortening journey time 3 hours, and avoid the peak accident, disaster-prone sections of roads to ensure smooth flow of road and driving safety.
At present, the two Lang Cairn Tunnel has been fully open to traffic, not only shorten the distance and increased safety margin before the journey is no longer possible exemption that happened. Have been completed and two Lang Cairn Tunnel is Asia's longest highway tunnel, the tunnel Ganzi greatly facilitated the completion of the traffic, and affected the entire Ganzi's tourism development, such as Inagi, Danba, so that these areas of tourism on the to a new level.
However, if the adventure tourism from the point of view, you can still drive along the old path of the original to the Erlang Mountain Peak to go around, because this road has not completely abandoned, as a way to retain the combat readiness, I believe that Erlang mountain scenery of the Peak Better than the original, because with the flow, traffic flow reduction in the wild Erlang is more exposed, many wild animals, began to return to Erlang.
The Gangu to have the operation of many private car and motorcycle are willing to take you to the Erlang Mountain Peak to take risks. Sichuan CYTS also have the opportunity to organize such an expedition mission to Erlang mountain adventure tourism.