Grottasöngr

Grottasǫngr (or Gróttasǫngr; Old Norse: 'The Mill's Songs', or 'Song of Grótti') is an Old Norse poem, sometimes counted among the poems of the Poetic Edda as it appears in manuscripts that are later than the Codex Regius. The tradition is also preserved in one of the manuscripts of Snorri Sturluson's Prose Edda along with some explanation of its context.

The myth has also survived independently in modified forms in northern European folklore. Gróttasǫngr had social and political impact in Sweden during the 20th century as it was modernized in the form of Den nya Grottesången by Viktor Rydberg, which described conditions in factories using the mill of Grottasǫngr as a literary backdrop.