The remote site deep in the mountains of the North's sparsely populated northeast interior is expected to have a formal closing ceremony in the next day or two, depending on the weather. The closing was announced by North Korean leader Kim Jong Un ahead of his planned summit with U.S. President Donald Trump next month.
The train trip was expected to take 8-12 hours, followed by several hours on a bus and then an hour hike to the site itself. The journalists were put in sleeping cars on the train, four bunks to a compartment. The compartments had windows covered with blinds, and the journalists were told not to open the blinds during the journey.
Media were also expected to pay their own costs for the trip. The train fare was $75 per person round trip. Each meal was $20. North Korea had earlier refused to grant entry visas to the South Korean journalists after the North cut off high-level contact with Seoul to protest joint U.S.-South Korean military exercises. But North Korea accepted the list of the South Korean journalists to attend via a cross-border communication channel.
The journalists from the MBC television network and News1 wire service took a special government flight later Wednesday to go to the North's northeastern coastal city of Wonsan. The other journalists from the United States, the UK, China and Russia arrived in Wonsan on Tuesday.
The group includes an Associated Press Television crew. The North's eleventh-hour decision to allow the South Koreans to join came just after Trump met South Korean President Moon Jae-in in Washington to try to keep the Kim-Trump summit from going off the rails. Trump indicated he believes the meeting will take place, but left open the possibility it would be delayed or even cancelled if a fruitful outcome doesn't seem likely.
The summit could offer a historic chance for peace on the Korean Peninsula. But there has been increasing pessimism about the meeting after North Korea scrapped the inter-Korean talks and threatened to do the same for the Kim-Trump summit in protest of the South Korea-U.S. military drills and what it calls Washington's push for "one-sided" disarmament.
The North's decision to close the Punggye-ri nuclear test site has generally been seen as a welcome gesture by Kim to set a positive tone ahead of the summit. Even so, it is not an irreversible move and would need to be followed by many more significant measures to meet Trump's demands for real denuclearization.
By bringing in the foreign media, mainly television networks, the North is apparently hoping to have images of the closing — including explosions to collapse tunnel entrances — broadcast around the world. But it has not invited international inspectors to the ceremony, which limits its value as a serious concession.
AP Pyongyang bureau chief Eric Talmadge contributed to this report from Tokyo. AP writer Hyung-jin Kim contributed from Seoul.