[Java 1.21] 2 Very big caves near the spawn -6355131139224226977

First one you can see on first 2 photos, X:-14 Y:85 Z:-30, second one is on third photo, and its kinda good for the base, X:2 Y:105 Z:-176
By the way, every world i create is good like this, i guess im very lucky. No generation changing mods used