Inside first transcontinental railroad tunnel


In the 1860s, America built the first transcontinental railroad across the country and many of the labourers who cut the tunnels by hand for a pittance in wages were Chinese.

Today, President Obama has made high-speed rail a priority, with the first line planned for California.

The Chinese are again involved, but this time proposing to design it, build it and part-fund it.

Quite a turnaround, which says a great deal about the changing world order.

Alastair Leithead visits one of the sites on the route of the original transcontinental railroad, in the Sierra Nevada mountains in California.

Copyright © 2015 BBC. The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.