Scott DeWar
Prof. Emeritus-Supernatural Events/Countermeasure
How's this: at one end of the water production is the decanter of endless water, while at the waste end is a sphere of annihilation.
Alternately is that the water goes through the previous aforementioned "pool of water purification" then can flow out a cave opening as a tall waterfall falling so far as to turn into a mist. The air can be sent to lower caves through a gust of wind or something to chamber with crops being grown in rooms with permanent light sources.
The gust of wind circulates the refreshed air once a day, not to mention blows dirt particals down to where the plants would need it.
Alternately is that the water goes through the previous aforementioned "pool of water purification" then can flow out a cave opening as a tall waterfall falling so far as to turn into a mist. The air can be sent to lower caves through a gust of wind or something to chamber with crops being grown in rooms with permanent light sources.
The gust of wind circulates the refreshed air once a day, not to mention blows dirt particals down to where the plants would need it.