An old temple at the top of a mountain is now the lair of a green dragon.
This is my interpretation of map 4 from the free adventure "A dungeon and a dragon" by Chris Bergman. The other three maps are also available here at DungeonFog.
No lightsources have been used as none of the races in the caves need light to see.
I used the adventure as the beginning of the 3,5 D&D "Expedition to the DemonWeb Pits", which explains the gate room on the second level of map 4 and the drow-patrol on map 3. The name and color of the dragontoken does not match the original adventure.