The bottom bedrock layer is at Y level -64. You can't currently play old worlds in the new snapshot, but they're going to implement a way to convert old worlds. When you generate new chunks, they'll probably have a 64-block vertical bedrock wall in the first block of the new border chunk blocking access to the void under your old chunks.
The bottom bedrock layer is at Y level -64. You can't currently play old worlds in the new snapshot, but they're going to implement a way to convert old worlds. When you generate new chunks, they'll probably have a 64-block vertical bedrock wall in the first block of the new border chunk blocking access to the void under your old chunks.
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There are ways to get through bedrock using glitches