I still have and use those anchors on my furniture, a habit I picked up in California, in the Bay Area. To keep my bookshelfs, monitors, computers, for example, from falling down in an earthquake.
Maybe the shaking is associated with waves of motion from which one could extract angles, vectors? and then if you could do that in multiple places, it might tell you something?? Where the source of the energy was?
Bay Area was in a real hotbed of faultlines.. Also other mysterious lines they have still not figured out. There are many many YT videos on this.. They are clearly prehistoric.. Maybe Lemuria? Mu?
Really.. those are among the theories.. I am not talking about the demise of the trollies, that is another story.. Public Transit was actually better in the distant past (immediate aftermath of WWII) than it is now!
I am talking about the mysterious rock walls.. Some people immediately blamed them on the Chinese.. since an admiral has sailed a fleet of huge wooden ships all around the world at one point, and everybody knows the Chinese built all sorts of walls, right? NOT
This is what I mean..
https://en.wikipedia.org/wiki/East_Bay_Walls But I think that is VERY unlikely.. Actually more connections exist between California and Russia.. like Fort Ross.. a former fur trading station that is now a state park..
https://en.wikipedia.org/wiki/Fort_Ross,_California"The first multi-ethnic community in California" the web page claims, but what about the Spanish/Indian mission system?
Which must have been multiethnic..