I believe that is not supposed to be canon and its just a basic builder mistake or something that can't be done. But it IS possible that the void extends through the whole world, as it is shown to be immense in 1000 feet under
All the void I think will be is a really deep valley that widens out under with a lot of islands floating in it, though the crystals are interesting
Heres the problem of the whole world being an island and the earth being hollow: Where does the magma/lava come from and how does it come out of the world
Problem with the valley: The mainland boarders from the sky islands look soo round, as if it was intentional there
if A, B, and C are all flawed, we always have the Builder Error Option or the Too Much Work To Be Worth It Or Realistic Option
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