Moonwell

A Moonwell is a magical well in the Moonshae Isles, sacred to the goddess Earthmother. There are several Moonwells but the most important is at Genna Moonsinger's druidic grove in Myrloch Vale. The Earthmother is able to manifest her power through the Moonwells. If corrupted by dark magic or filled with corpses, Moonwells become Darkwells which can be used to summon or create evil creatures or as portals to evil dimensions.

In Darkwalker on Moonshae, firbolgs pollute a Moonwell to allow the Beast, Kazgoroth, to enter the Forgotten Realms. Later, in Black Wizards, an army of undead capture the Moonwell in Myrloch Vale. The Goddess uses her power to spray milk from the well, saving her druids from death by turning them to stone. However, the Moonwell becomes so polluted that Bhaal is able to manifest through it, and use it to create Perytons, an Owlbear and a Displacer Beast from the bodies of animals lured to the well.