North Korea announced on Saturday that it will destroy its nuclear test site at Punggye-ri this month by blowing up the tunnels and blocking the entrance in front of the international media.
Observation facilities and research institutes would be removed along with guards, and the surrounding area of the test ground will be closed.
All the six nuclear tests were conducted at Punggye-ri and the latest one tested in last September was a hydrogen bomb. Kim has declared the site is of no use since his country has already developed the nuclear capability.
The dismantling of the site between May 23 and 25 comes ahead of the historic summit between North Korean leader Kim Jong-un and US President Donald Trump in Singapore on June 12.
Reporters from China, Russia, the US, Britain and South Korea would be allowed to cover the event. Only limited number of foreign journalists will be called because of space constraints at the test ground.
While the dismantling of the nuclear facility is a positive move by Pyongyang, it is yet to make any public commitment to give up its arsenal which includes hundreds of missiles capable of reaching the US.