Ífingr

The river that separates Ásgarðr from Jötunheimr, according to Gagnráðr in Vafþrúðnismál:

Ifing the stream is called

which earth divides between

the Jötuns and the Gods:

open shall it run

throughout all time.

On that stream no ice shall be.

The stream never freezes, so that the jötnar cannot cross it. There is no other reference to this particular river.

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