In the Skáldskaparmál, Snorri relates a story where Loki cuts off Sif's hair as a prank. When Thor discovers this, he grabs hold of Loki, resulting in Loki swearing to have a headpiece made of gold to replace Sif's locks.
The Gosforth Cross has elaborate carvings which have been interpreted as representing characters and scenes from Norse mythology. Those scenes are included below: -Loki bound with his wife Sigyn protecting him. -The god Heimdallr holding his horn. -The god Víðarr tearing the jaws of Fenrir. -Thor's failed attempt to catch Jörmungandr, the Midgard Serpent.