Hidden in the higher mountains of Wales, Unplottable and rumoured to be located somewhere within Snowdonia, lies the Welsh Dragon Reserve. Established centuries ago, this reserve is home to the native Common Welsh Green; however, over the years other other breeds of dragons (such as the Hebridean Black, Peruvian Vipertooth, Norwegian Ridgeback, Swedish Short-Snout, Romanian Longhorn, and Chinese Fireball) have been added to the reserve for training and research purposes as well as the safe-keeping of these dangerous beasts.

Dragons roam freely within a valley, which has magically drawn perimeters, containing a wooded forest, grassy plains, and numerous streams. There is a well-worn path that dragonologists use to make their way around the reserve, which begins and ends at the base of a snowcapped mountain. Some of the smarter dragons like to linger around this area as the feral goats trekking on the lower ranges make for an easy meal.

A large and deep cave can be found up alongside the mountain, which is where many dragons like to brumate during the winter months. The cave also doubles up as the training and research facility used by the dragonologists that work at the reserve. University students who aspire to work with dragons are encouraged to visit the reserve, where they can observe under the supervision of an employed dragonologist.