Originally Posted by Tasty1

Movement is normal, if it doesn't move too much.
But the underground is important to.
And you saw in Puerto Vallarta the most movement where there has been swamps.
Mexico City also has that problem. And Bangkok is also build on swamp.
I saw 4 same building in Mexico City in a row, 3 had nothing, 1 collapsed.

Mexico City Was Built on an Ancient Lake Bed.
That Makes Earthquakes Much Worse.
https://www.nytimes.com/interactive/...d-geology.html