No one knows its shape. When I say "it's level/flat", I refer to its surface; I can't make any assertions about its actual shape other than "it can be anything that allows for a level surface".
Similarly, in regards to its thickness, no one (AFAIK) has ever dug a hole deeper than the Kola Superdeep, which reaches a depth of 7.61 miles (12.2 km). Wikipedia says they couldn't dig deeper...
Because of higher-than-expected temperatures at this depth and location, 180 °C (356 °F) instead of the expected 100 °C (212 °F), drilling deeper was deemed unfeasible. The unexpected decrease in density, the greater porosity, and the unexpectedly high temperatures caused the rock to behave somewhat like a plastic, making drilling nearly impossible.
Regarding the outer perimeter, it is postulated that what we call Earth is contained within a crater-like hole, which would explain how water could accumulate to form oceans. On the classic FE model, the outer rim is the "ice wall", which is actually Antarctica. Could very well be, given the restrictions surrounding free exploration of Antarctica. None of us know what lies deep beyond the rim.
I suggest you disregard any claims about its "shape" (remember shape vs. surface), because that's impossible to establish with the information we have. Moreover, it is one of the main talking points of the all-too-famous "flat earth" psyop.
No one knows its shape. When I say "it's level/flat", I refer to its surface; I can't make any assertions about its actual shape other than "it can be anything that allows for a level surface".
Similarly, in regards to its thickness, no one (AFAIK) has ever dug a hole deeper than the Kola Superdeep, which reaches a depth of 7.61 miles (12.2 km). Wikipedia says they couldn't dig deeper...
Because of higher-than-expected temperatures at this depth and location, 180 °C (356 °F) instead of the expected 100 °C (212 °F), drilling deeper was deemed unfeasible. The unexpected decrease in density, the greater porosity, and the unexpectedly high temperatures caused the rock to behave somewhat like a plastic, making drilling nearly impossible.
Regarding the outer perimeter, it is postulated that what we call Earth is contained within a crater-like hole, which would explain how water could accumulate to form oceans. On the classic FE model, the outer rim is the "ice wall", which is actually Antarctica. Could very well be, given the restrictions surrounding free exploration of Antarctica. None of us know what lies deep beyond the rim; there may be other ponds or nothing at all, both just as difficult to wrap one's mind around.
I suggest you disregard any claims about its "shape" (remember shape vs. surface), because that's impossible to establish with the information we have. Moreover, it is one of the main talking points of the all-too-famous "flat earth" psyop.