If you teleport the player at the edge of the world to the y coordinate in the negative, once exceeded a certain figure the world will no longer be accessible to the player.
.
2019-01-06, 01:09 PM
2019-01-06, 03:24 PM
2019-01-06, 03:24 PM
0
0
-
.
2019-01-06, 01:09 PM
2019-01-06, 03:24 PM
2019-01-06, 03:24 PM
0
0
-