I took a tour of a cave in northern California last weekend. The tour guide asked us, "If an earthquake occurred, what would we feel in here?"
My answer was, "fear," but she said we would feel nothing - that earthquakes are not felt underground.
Although I did not contest her assertion, I have my doubts about it - after all, don't earthquakes normally have their epicenter underground (well, all the time, I reckon, as they can't emanate from the air)? And if an earthquake happened to erupt from within a cave[rn], wouldn't it most definitely be felt there?
I would think one might even end up with a stalagtite stuck in his noggin.
And, if I'm right (that there could be a whole lotta shakin' goin' on while on a journey to the centre of the earth), has anybody lived to tell the tale and really done it (told the tale)? A first-hand account could be riveting.