Actually, you can't there are none. I'm pretty sure the cave was just something Game Freak did to play with their wireless adapter more; perhaps it would be a place where you could interact with other people with the wireless adapter in. That would make sense, because the cave also appears in emerald after you beat the Pokemon league. Otherwise, nobody really knows what it does.
use their Pokemon
The Cave of Origin is in Sootopolis
you can use it in any cave to get out of the cave
unfortunately, there is no location called "chlorine cave" in Pokemon leaf green version
yes
there is none!
mistralton cave
You Can Go Into This Cave Once You Have Beaten The Pokemon League. Cerulean Cave Is Where Chanseys And Mewto At LVL 70.
Mistralton cave
it is inside the cave of origin
In Mistralton Cave
It is on the way to lavaridge.