The Devil’s Punchbowl is like that, at the Punchbowl and San Andreas Faults.

Laugh it up fuzzball

Sort of, it’s the nature of our faults. So cal is on transverse faults which are generally active but fairly minor shakers. They get together every once in awhile and break a 7.0, but that's the extent of their capabilities. Subduction faults such as Japan and Oregon don't move much, but when they do 8+ is possible…

Mountains, especially angular mountains are the direct result of geologic upheaval. It can be very active or on a great time scale, similar to super volcanoes that take several thousand years to erupt. As short lived humans we would have no cultural memory of this.

Interesting that the scenery surrounding many of these seismic areas is beautifully dramatic and should be a huge red flag as to how that came to be. Stark geologic elevations don’t exist in nature just because. The Earths natural course is to erode and flatten itself out but if you don’t obviously see that, something…