North Korea nuclear test site could collapse and spread radiation across region, scientists say

A mountain used by North Korea for its latest underground nuclear test might be in danger of collapsing and spreading dangerous radiation across the region, according to a group of scientists in China.

A secondary seismic shock following the North’s test of what is believed to be a powerful hydrogen bomb Saturday was initially interpreted as a likely collapse of a cavern in Mount Mantap at its Punggye-ri nuclear test site. But analysis of satellite imagery by the site 38 North on Tuesday found no evidence that there was a cave-in on the mountain. Satellite photos did, however, show that the test appears to have triggered landslides.