[AmericanInTokyo]

Or, mountain implosion from too many nuke tests for it to hold up, which was also predicted by some and worried about by the Red Chinks.

[TigerLikesRooster]

That could release radioactive materials trapped underground. There has been no clear explanation on another quake several minutes after the last test, either. Was it the implosion of the test site or did the test disturb underground fault lines?