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South Korea says that it has detected new activity at the closed Punggye-ri Nuclear Test Site in North Hamgyong Province, North Korea, via satellite imagery, stating that the North appears to be restoring tunnels that were demolished in 2018 when the site was shut down.
2022-03-11

North Korea sets off a series of explosions to demolish the Punggye-ri Nuclear Test Site to build confidence before the scheduled summit between Donald Trump and Kim Jong-un.
2018-05-24

North Korea stated that it would dismantle the Punggye-ri Nuclear Test Site between May 23–25 ahead of the Donald Trump-Kim Jong-un summit meeting. Furthermore, North Korea invited journalists from the United States, South Korea, China, Russia, and the United Kingdom to cover the process.
2018-05-12

South Korean officials say that North Korean leader Kim Jong-un stated during his summit meeting with South Korean President Moon Jae-in that he would close the country's Punggye-ri Nuclear Test Site in May.
2018-04-29

Scientists from the University of Science and Technology of China state that North Korea's nuclear test site, the Punggye-ri Nuclear Test Site at Mount Mantap, would have collapsed just minutes after the country performed its sixth nuclear test and opened up a hole of up to 656 ft in diameter. It has been one of the possible reasons given for North Korea agreement to suspend nuclear and missile tests.
2018-04-25

A 6.3 magnitude earthquake is detected near the Punggye-ri Nuclear Test Site in Kilju County, North Korea, after North Korea tests its sixth and most powerful nuclear weapon to date. North Korean state media claims the country tested a hydrogen bomb that can be fitted on an ICBM.
2017-09-3

South Korea says it will resume cross-border propaganda broadcasts and limit entry to the Kaesong Industrial Region in response to yesterday's nuclear test at the North's Punggye-ri Nuclear Test Site. North Korea considers the propaganda broadcasts to be "an act of war".
2016-01-7

A 5.1 magnitude earthquake near Sungjibaegam, North Korea, is suspected to be a nuclear explosion at the Punggye-ri Nuclear Test Site. North Korea announces it has conducted a hydrogen bomb test. They claim to have tested a miniaturized bomb. If not true it would mean that the test partially failed.
2016-01-6

North Korea may be preparing for an imminent thermonuclear weapon test at its Punggye-ri Nuclear Test Site, located in the country's North Hamgyong Province where previous tests took place in 2006, 2009 and 2013, according to a South Korean military report.
2016-01-3

A senior South Korean government official says that North Korea may be preparing for its fourth nuclear test, as increased activity is detected at its main test site. However, the South Korean Defence Ministry denied having clear signs that the test may be imminent.
2013-04-8