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
praying mantis
cricket
I am a cricket. I sit in the field and make chirping noises. People think I am a lucky bug and sometimes they hunt me. I like it better when I am just in the grass.
it is smokey in here this is the fairies church