the valkyries are beautiful young women, mounted upon winged horses and armed with helmets and spears. they scout battlefields, selecting the bravest of slain warriors and escorting them to valhalla. in this immense, majestic hall, ruled by odin, these warriors (the einherjar) fight, feast, and prepare for the oncoming battle of ragnarok. the valkyries are also odin’s messengers. when they ride forth on their errands, their armor causes the lights known as aurora borealis.