I'm glad you asked! It's just a mod that adds the white ash particle from the Basalt Deltas biome to the underground to simulate dust! After all, the air wouldn't be 100% clear in a real mineshaft :p
Now to the nitty gritty: It works by checking if the player has the sky above them while being below sea level and then scales the amount of particles based on depth.
It has a config system that you can access using Mod Menu.
As a note, it doesn't activate in the Lush Caves biome, since it already has it's own particles :p
This was inspired by Dylanstime in the moonflower Discord server, thanks for the idea!
Cave Dust requires the Fabric API but everything else Cave Dust needs is included. HOWEVER, I recommend Mod Menu to be able to use the config screen :p
