# Scientists detect prolonged, unexpected seismic activity at North Korea’s nuclear test site

https://mins.news/en/item/63186

- CNN, 2026-09-17 19:31 UTC
- Science
- Original: https://www.cnn.com/2026/09/17/science/seismic-activity-north-korea-nuclear-test-site?Date=20260917&Profile=CNN

> Scientists say seismic activity at North Korea’s sprawling Punggye-ri nuclear test site has risen unexpectedly and for an extended period since the country conducted its final and most powerful nuclear test in 2017.