Inside Fukushima - in pictures

Officials from Tepco ride on a bus as they pass by the crippled Fukushima nuclear power plant, seen through the window. Photograph: David Guttenfelder/AFP/Getty Images

Japanese officials and journalists are driven through the contaminated exclusion zone on their way to the Fukushima nuclear plant Photograph: David Guttenfelder/AFP/Getty Images

Fukushima workers listen to Japan's environment minister, Goshi Hosono, in Okuma Photograph: David Guttenfelder/AFP/Getty Images

Those allowed into Japan's tsunami-damaged nuclear power plant for the first time saw a striking scene of devastation Photograph: David Guttenfelder/AFP/Getty Images

Crumbling reactor buildings and piles of rubble virtually untouched since the wave struck more than eight months ago were seen Photograph: David Guttenfelder/AFP/Getty Images

Fukushima power station Photograph: David Guttenfelder/AFP/Getty Images

Members of the media, wearing protective suits, interview Hosono and nuclear plant chief Masao Yoshida Photograph: David Guttenfelder/AFP/Getty Images

The scenes of devastation Photograph: David Guttenfelder/AFP/Getty Images

A worker is given a radiation screening as he enters the emergency operation centre Photograph: David Guttenfelder/AFP/Getty Images

The tour passed by newly built sea walls next to the plant Photograph: David Guttenfelder/AFP/Getty Images

The Unit 4 reactor building Photograph: David Guttenfelder/AFP/Getty Images

Workers in protective suits and masks wait to enter the emergency operation centre Photograph: David Guttenfelder/AFP/Getty Images

The Unit 4 reactor building Photograph: David Guttenfelder/AFP/Getty Images