[1] Later they see two huge eyes and hear a voice which recites a poem of twelve stanzas,[1] now known as Hallmundarkviða.
Bergbúa þáttr was probably written some time in the thirteenth century,[1] but Hallmundarkviða may be considerably older.
[4] The name Hallmundarkviða is only attested from 1844[4] but it has been proposed that the poem refers to the tenth century eruption at Hallmundarhraun.
[4][5] The text survives in fragmentary form in AM 564a 4to[4][6] (Pseudo-Vatnshyrna) and in paper copies made by Árni Magnússon of the Vatnshyrna manuscript, which was destroyed in the Copenhagen Fire of 1728.
[7] It is unusual amongst þættir for not being preserved as part of the kings' sagas manuscripts Flateyjarbók and Morkinskinna.