The twilight of the peace in Asgard began not with a war, but with a mistletoe branch and a whisper. For ages, Loki, the son of the jötunn Fárbauti and Laufey, had walked the halls of the gods, sometimes as a friend, often as a nuisance, but always as a fixture of the divine order. However, his role shifted irrevocably from trickster to antagonist when he orchestrated the death of the beloved god Baldur. After the funeral pyre had cooled and the gods had mourned, a darkness settled over the world. Loki, sensing that the patience of the Aesir had finally reached its breaking point, fled the golden gates of Asgard. He sought refuge in the remote, jagged landscapes of Midgard, where the mountains pierce the clouds and the rivers run cold and deep, much like the terrain found at Fjarðarárgljúfur.
Loki built himself a peculiar house upon a high mountain. It was a dwelling with four doors, one facing each cardinal direction, allowing him to survey the horizon for any sign of the gods' approach. During the daylight hours, he transformed himself into a salmon, hiding in the foaming waters of the Franangr Waterfall, thinking that even the all-seeing eyes of Odin might miss a single silver fish amidst the spray. While in his mountain hut, Loki occupied his mind by contemplating how the gods might attempt to catch him. He took linen thread and began weaving it into a mesh—the very first fishing net. In his brilliance, he had designed the tool of his own undoing. When he saw the Aesir approaching in the distance, led by the eagle-eyed Odin and the thunderous Thor, Loki cast his net into the fire to destroy the evidence of his genius and dived back into the river.
When the gods reached the hut, they found only white ash in the hearth. It was the wise Kvasir who examined the patterns in the embers and realized the shape of the net Loki had devised. The gods quickly replicated the design and dragged it through the river. Loki twice eluded them by hiding between stones, but on the third pass, he attempted to leap over the net. Thor, with his unmatched reflexes, reached out and caught the salmon mid-air. The fish was slippery, and Thor’s grip was so tight that the salmon’s body was squeezed thin toward the tail—a trait Norse tradition says all salmon have carried ever since. Loki, restored to his natural form, was led away in chains to a dark, damp cavern deep within the earth, a place where the sun’s light could never reach.
To ensure Loki’s confinement was absolute, the gods brought his sons, Narfi and Vali, into the cave. In a display of divine wrath that mirrored the cruelty Loki had shown Baldur, the gods transformed Vali into a savage wolf. The beast, losing his mind to the change, turned upon his brother Narfi. Once the tragedy was complete, the Aesir took Narfi’s entrails and used them to bind Loki to three sharp-edged stones set on their sides. One stone was placed beneath Loki’s shoulders, one beneath his loins, and one beneath the hollows of his knees. As soon as the bindings touched the cold stones, the gods transformed the viscera into unbreakable bands of iron.
Skadi, the goddess of winter and the daughter of the giant Thjazi—whom Loki had played a hand in killing—sought her own final revenge. She took a venomous serpent and fastened it to the roof of the cavern, positioned directly over Loki’s face. The serpent’s maw dripped a caustic, burning venom that fell drop by drop toward Loki’s eyes. It was at this moment of utter despair that Sigyn, Loki’s wife, proved her unwavering loyalty. Despite her husband's many crimes and the ruin he had brought upon their family, she did not abandon him. She took a large bronze basin and stood over him, holding the bowl aloft to catch the dripping poison. For hours and days, she stood as a silent sentinel, her arms aching and her spirit weary, protecting her husband from the searing liquid.