At least 10,000 soldiers are working on a project to refurbish North Korea's May Day Stadium, the largest capacity venue in the world, a source in Pyongyang has told NK News.

The soldiers, who the source said may be among the same to have recently built North Korea's controversial Masik-ryong ski resort, are working and living in temporary accommodation at the stadium, with scores of "primitive barracks" visible around the circumference of the venue.