Media playback is unsupported on your device

Fukushima: Water pouring down from hills

23 August 2013 Last updated at 07:23 BST

Japan's nuclear watchdog has said the crippled Fukushima nuclear plant is facing a new "emergency" caused by a build-up of radioactive groundwater.

In the mountains above the crippled Fukushima nuclear plant, rainfall collects and flows down to the Pacific - through highly contaminated ground.

The Nuclear Regulatory Authority says a barrier built to prevent that water reaching the ocean has already been breached, while tanks built to contain it are nearly full.

Rupert Wingfield-Hayes reports from Fukushima.

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.