 Accounts of a serpent sitting on gold, the poisonous skate, and a strange giant seal localized at Lagarfljót are told of in the poem "Rönkufótsríma" by (d. 1688).The gold-hoarding serpent according to the poem measured one-half "Þingmannleið" in length or approximately 20 km, and had its head and tail pinned to the ground (lakebed).Jón Árnason also touched upon the skate and seal ("Selurinn og skatan í Lagarfljóti") in his 1862 book.