China builds a bridge across the sky

The challenging Sichuan-Tibet line will run for 1,700 kilometers over breathtaking but dangerous terrain and will cost a staggering $36.88bn

CHENGDU - Breathtaking scenery and breathtaking dangers. Chinese engineers will face both as they embark on building the world's most difficult railway.

The Sichuan-Tibet line will be the second railway into Southwest China's Tibet autonomous region after the Qinghai-Tibet connection.