Urðarbrunnr
Urðarbrunnr (Old Norse "Wellspring of Urðr"; either referring to a Germanic concept of fate—urðr—or the norn named Urðr) is a spring or well in Norse mythology. Urðarbrunnr is attested in the Poetic Edda, compiled in the 13th century from earlier traditional sources, and the Prose Edda, written in the 13th century by Snorri Sturluson.