The glittering, golden cock that sits on the highest bough of the tree Mímameiðr, according to the eddic poem Fjölsvinnsmál:
The poem further states that Víðópnir can only be killed with the weapon Lævateinn.
Surtr is the giant who rules the fire-world, but seems here to represent giants in general. It is not known who Sinmara is, possibly Surtr's wife.
- Fjölsvinnsmál, 25.