Underwater, there are insane implosions at 25K feet below sea level. At that same depth on land, we have caves.
Why doesn’t the earth compress things like water does? Does gravity do different things to different materials?
In: Planetary Science
Rock is solid.
Water is liquid.
Solids keep shape, liquids don’t.
That said, holes in rock “implode” too. That’s what, for example, a mine shaft collapse is. All the pressure of the rock above and around causes it to cave in (aha) on itself, just like a pocket of air underwater.
It just takes a lot more time.
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