Underground must be a scary place to go through an earthquake
Never experienced an eathquake and am more than fine with that!!
My parents were in Penzance about 10 - 15 years ago when they had one and scared the hell out of them.
Stayed in a lovely family run guest house just outside San Francisco years ago while travelling up the west coast on hol's and had to go through a "earthquake emergency procedure" thingy run by the family. Still remember what to do now.
State of California seem to have everything planned for the "Big One", was given instructions by friends on what to do if in a car, a public place or in the wilderness blah blah blah!