WIP
Story: Lunar Valley, home to the dark flygon breed. This 'valley' is like a city to dragons, it's a ravine, in the middle of a sandy desert hidden within it.
The length of it was about 10 km long, but it was in a loop.
The bottom of it was lava, covered by obsidian, and then from waterfalls above land, half a metre of water, which is heatened like a spa, from the lava.
(Which made the place a great attraction to other dragons.)
The Valley was mainly a solid light brown dirt-like rock.