Vígríðr

Vafþrúðnismál names Vígríðr as the plain where Surtr and the gentle gods will meet in battle, a hundred rasts across on every side; “that plain is to them decreed”. Gylfaginning gathers the sons of Muspell, the wolf Fenrir, the Midgard serpent, Loki, Hel’s followers and the frost giants there. The entry notes that the size is a general phrase for a vast distance, and that the fuller account of the battle is Snorri’s.