Yes, yes this is all very well but some distance from earthquake passage.
Has no-one managed to push the pitches below earthquake passage to their conclusion?
Incidentally the lady of which you spoke, did she by any chance show any interest in mining history. If so I would be only too willing to show her the girth of my experience when it comes to such matters.
The finest workers in stone are not copper or steel tools, but the gentle touches of air and water working at their leisure with a liberal allowance of time.
Henry David Thoreau