The problem was between Ksenyevskaya and Kisliy Klyuch in the Trans Baikal region.
Answer: The Trans-Siberian Railway, according to international broadcaster CNN.
29 carriages with coal went off the rails on the Trans-Siberian line in Irkutsk region.
Crashing viaduct narrowly misses a freight train - and rail worker is seen fleeing the disaster.
Siberian expedition to find English steamboat 'The Thames' led by pioneering British mariner that sank in 1876.
Kamvari Architects won an open international competition to design information kiosks along the world's most famous rail route.
Officials from Russia and North Korea say the long-waited train connection is now almost ready.
Huge economic boost from upgrade to Baikal-Amur and Trans-Siberian lines.
Now The Siberian Times is seeking to find descendants of British mariner Captain Joseph Wiggin.