If you fell down a rabbit hole, what do you think you’d find?

I found myself falling further and further until I landed with a thud on a bed. I looked up to see a little boy staring at me with a blank expression. I looked up. Apparently I fallen through some kind of a chimney. Why was it above a bed?

Far beneath the earth’s surface, further than we have ever tried to go there seems to exists an undergroud version of our world. How do they manage to survive here? Do they get their air via the rabbit holes extending all the way to the earth’s surface. Do the rabbits and underhumans as I have chosen to call them, co-operate to ensure each other’s survival?

The rabbit bring them air via their tunnels while the underhumans ensure that they have a steady supply of carrots.