The Deep Twilight Forest is a forest whose trees grow so thick and lush that they block out sunlight and form a natural maze, making it difficult to traverse.
Deep in the forest, there are ruins belonging to the Sindar. These ruins are emblazoned with a rendering of the Twilight Rune and seem to open in response to its counterpart, the Dawn Rune. Bringing the Twilight Rune to the ruins activates a projection of the seer, Leknaat.
- Genso Suikoden Kiwami Encyclopedia, page 654