I Dont Know How This Happened. (Minecraft 1.13, I placed Minecraft 1.9 because it was the latest version available for this webpage)
X: 112 / Y: 0 / Z: -208
X: 0 / Y: 0 / Z: 0 If you dig straight down, you will find a set of mineshaft like the ones at 107038380838084!!!But these mineshafts are not infinite, they reach from 0x 0z up to -240x 0z approximately.