North Korea’s Punggye-ri facility has suffered a devastating collapse, leaving around 200 people dead.
Around 100 people were killed when when an unfinished tunnel collapsed at Kim Jong-un’s main nuclear testing site.
Another 100 people subsequently died while attempting to rescue the first group of entombed workers.
Foreign experts had warned a collapse was likely, highlighting the danger of a cloud of radioactive fallout escaping from the site and spreading across “an entire hemisphere”.
The disaster was revealed by Japan’s TV Asahi today, although they could not clarify when the accident and subsequent doomed rescue attempts took place.