Chronicles of the Dawnblade
Athel Loren is an ancient, magical forest that is home to the Wild Elves. It is portrayed as being somewhat sentient and aware of itself, and those beings who dwell within its bounds. Athel Loren uses the Wild Elves as its defense during the winter months when it slumbers and is weak against invaders.
It is not known whether the forest actually favors the Wild Elves wholly or is simply employing them as a convenience, as it has not fully opened itself up the them, as is evident in the forbidden quarter known as the Wildwood. Any who pass into these dark glades are not ever seen again, and has to be bound by magical Waystones to keep its shady energies contained.