http://www.scmp.com/news/china/diplomacy-defence/article/2109725/north-koreas-nuclear-test-site-risk-imploding-Chinese
John and Doves,
So far North Korea has tested 5 nuclear bombs under the same mountain. On Saturday ( 9-9-2017) they will test yet another bomb--their sixth--and it could be a radiation disaster.
Last Sunday (9-3) NK tested a bomb under that same mountain that aerial photos showed the mountain lifting in the air for a moment and then landslides followed.
If that were to happen again on their sixth try, then it might cause the mountain to implode, exposing a hole which would allow radiation to leak. That would be a catastrophe for North and South Korea, parts of Russia and China.
Praying that does not happen,
Seeker