This is my entry for the caved in contest

These are the cities Koir and Krateer,

Koir is the city of the nordic dwarfs and was the first city in the cave the dwarfs always worked underground but when the humans became rulers in the overworld, the elves were forced to come live with the dwarfs.

So they made their own city (Krateer) at the highest points of the Cave they made bridges and walkways hanging in the air and with some help from the dwarfs some walkways in the wall of the cave, the elves where so greatfull for the generous deed from the dwarfs to let them live in their cave they gave them a Magic tree of light that will warn the dwarfs and the elves when there are humans nearby.

Untill now the Dwarfs and the Elves have lived in peace until the Human will discover this BIG secret...

For 19.700 years the tree was glowing but since the year 2000 the tree is giving less light every month so the dwarfs and the elves know there is something coming, but when...?

that answer is coming and with an high speed.