Back after the Oklahoma City bombings, UFO/conspiracy theory extremists claimed the initial reporters on the scene were focused on an underground tunnel complex exposed by the blast, which then ushered in about 20 other Illuminati/Bilderberger/NWO/UFO/alien/you name it CTs.
Of course, if they exist and were being extended, they might nicely explain the continuing seismic activity in the area,...at least moreso than fracking, although both are probably off by several orders of magnitude in observable energy release in the seismic activity.
The Oklahoma City bombing didn’t rock houses back and forth in Tulsa, but several earthquakes have done so in Tulsa in the last several years.
I had not heard about the tunnels under the OKC bombing site.
Conspiracy theorists have claimed there is a huge network of tunnels (including high speed trains) crossing the country, along with the obligatory ET housing and recreation. :-)
Perhaps the fracking companies were not “briefed” and have caused damage to the tunnels.
Secrecy can backfire big time.