Create a hyper-realistic depiction of Thor, the God of Thunder, adorned in extraordinarily detailed armor etched with intricate Norse symbols. He wields the mighty Mjölnir in his right hand, while fierce lightning bolts radiate around him. Thor stands with formidable presence at the grand entrance of Valhalla, the sacred hall of the slain. The dramatic scene captures the divine aura of Thor, emphasizing the contrast between the vivid crackling energy and the majestic serenity of Valhalla's surroundings.