In Norse beliefs, "Valhalla" refers to a grand hall where fallen warriors, known as Einherjar, are taken after their death. It is ruled by Odin and serves as a place of honor for those who have died in battle. The warriors prepare for Ragnarok, the end of the world, by engaging in daily feasts and battles. Valhalla epitomizes the warrior ethos of Norse culture, emphasizing bravery in combat and the afterlife awaiting heroes.