The Forests of Balor is a vast wooded area in Albion; it is likely that the forests grow in a country called Balor. The forests are home to creatures such as Balorian Spiders, which live in the caves deep beneath the forest, and the Cockatrice, a dangerous lizard like animal. Flora growing in the forests include the Mortaeus tree, on the roots of which the Mortaeus flower grows.
This was where Arthur and Nimueh met when Arthur went on a quest to retrive the Mortaeus flower in order to save Merlin from a deadly poison, on the way Arthur encoutered Balorian Spiders and a Cockatrice. Nimueh betrayed him at the end, leaving him to die in the cave, but Merlin 's guiding light saved him (The Poisoned Chalice).