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These Tennessee caverns are critical in detecting secret seismic activity across the globe

Name: These Tennessee caverns are critical in detecting secret seismic activity across the globe
Uploaded: 2018-09-29T22:51:02.000Z
Duration: 2 min
Description: Caverns underneath Tennessee’s Smoky Mountains contain sensors buried deep inside that can detect seismic activity, including underground nuclear tests in North Korea.

Caverns underneath Tennessee’s Smoky Mountains contain sensors buried deep inside that can detect seismic activity, including underground nuclear tests in North Korea.