The far lands were removed in update 1.8 for the Java edition of Minecraft. The far lands was originally a bug in the code that caused terrain generation to go completely haywire at + or - 12,550,825 blocks on the horizontal axes, creating large gaps in the surface and massive cliffs. The bug was removed and these terrain abnormalities no longer exist, with the terrain generation remaining stable all the way to the world barrier at + or - 29,999,999 blocks horizontally. Beyond the barrier, you can see normal terrain generation, and that's kinda lame. This is a petition to purposefully add the terrain deformation of the far lands as the appearance of the inaccessible terrain beyond the barrier to make an epic aesthetic for the edge. Here's an example of how awesome the far lands look https://youtu.be/qL52LUdlYJU