The disaster exclusion zone around Japan's Fukushima nuclear power plant is being lifted.
All areas within 20 kilometres of the site were closed off after the 2011 earthquake and tsunami.
That cordon will now shrink and be replaced with a series of graded restrictions, depending on annual radiation levels.
But at the plant itself, serious problems continue most pressing, as 400 tonnes of ground water becomes contaminated every day.
Al Jazeera's Harry Fawcett reports.