"Mímir's well." One of the three wells said to be located beneath the roots of the world-tree Yggdrasil, the root that runs towards Jötunheimr. The well is associated with Mímir and is attested in Völuspá:
- Odin! I know all,
- where thou thine eye didst sink
- in the pure well of Mim.
- Mim drinks mead each morn
- from Valfather's pledge.
Snorri Sturluson says that in this well "wisdom and understanding are stored; and he is called Mímir, who keeps the well. He is full of ancient lore, since he drinks of the well from the Gjallar-Horn. Thither came Allfather and craved one drink of the well; but he got it not until he had laid his eye in pledge." At Ragnarök, Odin shall ride to the well and consult with Mímir for himself and his host.
- Gylfaginning, 15.
- Völuspá, 22.