I could be wrong, but I'd worry about earthquakes severing the lines. This map[0] shows the major faults, but each one of those is a lot of small minor faults

I could be wrong, but I'd worry about earthquakes severing the lines. This map[0] shows the major faults, but each one of those is a lot of small minor faults that all could snap things and shift. One small fault right by where I grew up is about three blocks long. Last I checked had one earthquake to its name: a magnitude 5.0 aftershock of Loma Prieta [0] https://usgs.maps.arcgis.com/apps/webappviewer/index.html?id=5a6038b3a1684561a9b0aadf88412fcf https://usgs.maps.arcgis.com/apps/webappviewer/index.html?id...