Green Dragons are also sometimes called “earth” dragons. They usually live deep within caves, and have power over the earth. They are capable of launching boulders at high speeds, and can cause earthquakes by slamming down onto the ground.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons is usually marked by the growth of a hatchling’s wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. In Galsreim, dragons and humans coexist peacefully.

Cave-In got his name saving the clan's hatchlings and eggs. Cave-in was always a loner,who often sat in the entrance hall of the cave, piling up rocks and pebbles. The other hatchlings and dragons would get huffy about having to walk around his piles. Then one day some hunters came looking for eggs and hatchlings while the adults were gone. All the hatchlings hid in the back of the cave fearing they had no chance, but when the hunters looked into the cave and saw the pile of rocks and pebbles  they thought the cave had fallen in and was unstable. They were afraid to go in and check it out.  Now Cave-in goes to all the clans caves and makes his little

'cave-ins' with pride.