a biggest cave with lots of diamonds,irons,gold and lapis

In chords:145 1 -223 the cave will be there and its way to huge around 1000 to 2000 blocks i think you can make nether portal using lava in chords:234 -30 -258 or 197 -54 -165 in both chords you could find lava and minecraft dungeons chords:221 -3 -349 as well as zombie spawner chords:109 -10 -228