Forge version: 37.0.45
Twilight Forest version: 1.17.1-4.0.676
Link to crash log: N/A

Steps to reproduce:

1. Visit a hydra lair

What I expected to happen: The cave to generate like normal, partially covering the hydra overhead

What happened instead: The cave is generating to be about 10 blocks tall, the rest is presumably buried

Fixed via 3cfc50a