In olden times when maps were made, in areas that it was thought that there were dangers they would put images of dragons. “Here be dragons”.
Maybe you could draw up you own map to show where you can find dragons. Would it be in the mountains? In the desert? Would there be caves? Near the sea? Where would they live in your dragon world?
How would you show the dragons, and what other symbols could you put on your map to show dangers?
The Story Shed 