[fogleman]

Presumably it was open & empty, so it's just a piece of glass surviving...

[dmurray]

Even so, wouldn't you expect that you could crush an open empty beer bottle by putting a heavy enough weight on it? A human can't do it, but I would expect an elephant can.

[bracketfocus]

The pressure inside the bottle is the same as the outside. So it’s not the same as stomping on an empty bottle.

[RajT88]

There is quite a lot of pressure put outside from the beer of a full bottle, but that little bit of air is probably enough to cause it to implode at some point.

I'll be honest; I have no idea how to estimate that. I'm sure there are folks on here who can (and might). It's probably not as deep as you'd think.

[wolvoleo]

I'd imagine the cap will fail under the pressure long before the forces get high enough to implode the bottle.

[jdmoreira]

That's not how pressure works if it's opened. The forces balance out

[FL410]

But the forces are the same all around the bottle (again assuming it is open)

[rags2riches]

The bottle wouldn't be empty though.

[mihaaly]

no