One of the decorations on Ragnarr's shield probably showed Thor's fishing trip. This illustration of the scene is from an 18th-century Icelandic manuscript.
Ragnarsdrápa is a skaldic poem said to have been composed in honor of the Scandinavian hero, Ragnarr Loðbrók, but likely actually addressed to some later Ragnarr. It is attributed to the oldest known skald, Bragi Boddason, who lived in the 9th century, and was composed for the Swedish king Björn at Haugi. Bragi describes the images on a decorated shield which Ragnarr had given to him. The images included:
- the attack of Hamdir and Sorli against King Jörmunrekkr
- the never-ending battle between Heðinn and Hǫgni.
- Þórr's fishing for Jǫrmungandr (The Midgard Serpent)
- Gefjon's ploughing of Zealand from the soil of Sweden
The extant fragments of Ragnarsdrápa are preserved in Snorri Sturluson's Prose Edda. The episodes of Hamdir and Sorli and Heðinn and Hǫgni are explicitly ascribed to Ragnarsdrápa while the other parts are inferred by scholars to belong to the same poem, describing the images on the four quarters of the shield, in four stanzas each with, presumably, a lost refrain.
The poem is often compared with Húsdrápa and Haustlöng, which also describe artworks depicting mythological scenes. Like Haustlöng, it uses archaic and complex kennings in a manner which strains the syntax. Although the dróttkvætt metre violates some of the rules developed later, it is well executed; this and the complexity of language demonstrate that there had already been considerable development of skaldic verse.