In Norse mythology, Valhalla is an enormous and majestic hall in Asgard, headed by Odin. Described as a "warriors paradise," it is here that the souls of those who are slain in battle go, chosen and guided by the Valkyries, a group of warrior maidens in service to Odin. Once they are there, these eïnherjar, as they are known, make revelry, as they feast on the beast known as Sæhrimnir, having their fill of mead made from the udders of the female goat Heidrun. The feast is prepared by Andhrimnir, the cook of the gods, in his cauldron, Eldhrimnir. Outside of Valhalla’s doors lies Glasir, a massive tree that grows golden leaves, while its ceiling is adorned with golden shields. The tree Læradr stands atop the great hall, where both Heidrun and the stag Eikþyrnir graze its foliage. During Ragnarok, the eïnherjar will aid Odin in his battle against Surtr and his forces.