North Korea's ongoing actions to develop its nuclear program not only stir the West.
However, inside the country itself, there are fears that this program will disrupt the natural conditions of North Korea.
The concern arose after a study showed a negative geological condition at a site that has been used as a nuclear test site.
During this time, five of six nuclear launch tests were conducted on the Punggye-ri site, Mount Mantap, southwestern North Korea.
Site 38North, as quoted by Sky News which always provide related developments of North Korea, describes a phenomenon occurs in the region Punggye-ri.
Especially since North Korea conducted the final test on September 3, which claimed to be the largest nuclear test.
The news website 38North explained, there were three small earthquakes after the test.
The first quake occurred shortly after the test. Then the two remaining quakes with a smaller scale felt late September and last weekend.
Then, the impact of a series of tests, the area around the explosion extends up to 1.4 kilometers.
This condition is called "Tired Mountain Syndrome", with stones around the site of Mount Mantap become fragile and easily destroyed.
However, 38North added, the study did not destabilize the Kim Jong Un administration to continue to use the Punggye-ri site as a test location for nuclear detonation.
Kim Jong Un himself earlier this month said the North's nuclear program is a "worthwhile sword" to ward off all the aggression that leads to them.
