|Location:||Albion, Isle of the Blessed|
|Appearances:|| The Mark of Nimueh|
The Poisoned Chalice
Nimueh's cave is a large, dark and gloomy cave with a bowl of water on a tall stand in the centre, in which Nimueh can peer into other places by casting a spell over it.
- The location of the cave is currently unknown. Nimueh's cave may be located on the Isle of the Blessed because she is later found inhabiting the Isle (Le Morte d'Arthur).
- Vast caves exist beneath the Forests of Balor, and Nimueh is clearly acquainted with these caverns, as she lured Arthur Pendragon into their depths (The Poisoned Chalice).