Mila Mountain, or Mira Mountain, or Milha, is a mountain in the Tibet Autonomous Region of China, roughly 150 kilometres (93 mi) by road northeast of Lhasa. The road pass that runs by its peak is one of the highest on China National Highway 318.
Mila Mountain lies on the border between the Lhasa Prefecture and the Nyingchi Prefecture, and has an elevation of 5,200 metres above sea level.
The pass to the west of the mountain between Lhasa's Maizhokunggar County and Nyinchi's Gongbo'gyamda County is the highest point on the Nyingchi–Lhasa section of China National Highway 318. It has an average elevation of 5,000 metres. In 2006 it was reported that local farmers could earn around 50 yuan, or US$6.25, daily from selling souvenirs at the Mila mountain pass.
In January 2015 it was announced that there were plans to build a tunnel for this part of the road later in the year. The tunnel opened to traffic on April 29, 2019 and is the highest road tunnel in the world.
The world's highest road tunnel is at an altitude of over 4,750 meters above sea level in southwest China's Tibet Autonomous Region. The two-way tunnel is over 5.7 km long, which is a part of the 400-km highway linking the regional capital of Lhasa with Nyingchi in the southeast of Tibet.
Construction of the tunnel started in 2015 on the 5,018-meter-high Mila Mountain, and it was completed on Monday, helping shorten the 18-km distance over the mountain to 5.7 km.
According to en.wikipedia