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I've never heard about this possibility before, but it just came up in my mind when I posted the pic about that massive sinkhole.

I've never heard about this possibility before, but it just came up in my mind when I posted the pic about that massive sinkhole.

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[–] • 1 pt

Good question. A wild guess... if you filled all the trenches in with mountain ranges and ground the hills down, you'd have a world covered in ...100' of water on average, I'd say.