No one has actually seen it, but a fairy interpreter asked a fairy and they described it as just a cloud of smoke and once in a while you trip over something in the floor.  The fairies purposely leave their trash in the floor because they think it is funny when people trip over them.
Inside the fairies church, Inside Church
fairy interpreter
praying mantis
I am usually here. I'm never there. I sit and think very, very slowly. Then I move very slowly there. I eat leaves and think extensively on how not to move.
Yes..I am a praying mantis.. Do you have a problem with that? I don't think so. Should I? Well..I am a talking praying mantis That's ok. I'm a fairy interpreter so I can understand you.  Is that so? What does this thing called a "Fairy Interpreter" do, exactly..? Well, I can interpret the things you and others say. It's kind of a cool party trick. What exactly are you praying for today? sshh... Just because i'm a praying mantis, doesn't mean I pray. Do you think I really have time for that? Well what else do you do with your time? I usually eat smaller bugs, Once I ate a bird..It wasnt very tasty..Im still finding feathers everywhere.. Ewww! I also heard you bite the head off your mates. Is that true? Well usually..Depends on if she's annoying.. Oh. I thought it was the female who bit the head off the male. I guess I was mistaken. 