Breathtaking scenery: Aerial view of Qinghai-Tibet Railway, world's highest and longest plateau railroad. It's the first railway connecting Tibet Autonomous Region with other parts of China, and has helped drive double-digit growth in the region. | China Xinhua News

All aboard! Step inside a carriage on the Qinghai-Tibet railway, the highest railroad in the world. | China Plus Culture

Being called ‘railway to heaven’ and the 'sky road,' Qinghai-Tibet Railway holds the record for the world’s highest train route, reaching altitudes over 5000m. For centuries, Tibet was cut off from the outside world by its remote location, extreme climate and geographic environment. This far-flung region thwarted all but the boldest travelers and explorers, until the construction of the Qinghai-Tibet Railway in 2006, which connected Tibet to the rest of China. It is an extraordinary feat of mode

Amazing aerial view of Qinghai-Tibet Railway, the world's highest and longest railway built on a plateau | China Xinhua News

The Qinghai-Tibet Railway is the world’s highest and longest plateau railway. If traveling to Lhasa by train, you will discover that the most important part of the rail is a single-track railway: but why? | China Q&A