This creature doesn't eat meat or grass but specializes in eating sand, especially fond of stones.
Its survival depends on consuming stones and extracting minerals from them.
Damn, it's practically a living tunneling machine!
And it's self-generating power, working while eating, no need to feed it at all.
The only thing necessary is, when a Stone-eating Beast is working, a team is needed to clean up after it—literally to clean up.
Because this creature works while it eats, it finishes the job as it consumes.
But... as it eats its way through, it also leaves a trail!
It consumes hard stones and excretes something soft, similar to clay.
Though it sounds gross, being the excrement of the Stone-eating Beast, it actually isn't smelly, just has a faint rusty smell. It's very useful as an adhesive for construction.
However, cultivators don't use this stuff—after all, it's waste, not exactly dignified to use.
