("when the gods will be destroyed") from , , and , ("destruction of the age") from , ("end of the gods") from , and, in the Prose Edda, ("when the sons of Muspell move into battle") can be found in chapters 18 and 36 of . Presence in literature Poetic Edda The Poetic Edda contains various references to : In the Poetic Edda poem , references to begin from stanza 40 until 58, with the rest of the poem describing the aftermath. In the poem, a (a female seer) recites information to Odin. In stanza 41, the says: The then describes three roosters crowing: In stanza 42, the herdsman Eggthér sits on a mound and cheerfully plays his harp while the crimson rooster Fjalar (Old Norse "hider, deceiver") crows in the forest Gálgviðr. The golden rooster Gullinkambi crows to the Æsir in Valhalla, and the third, unnamed soot-red rooster crows in the halls of the underworld location of Hel in stanza 43. After these stanzas, the further relates that the hound Garmr produces deep howls in front of the cave of Gnipahellir. Garmr's bindings break and he runs free. The describes the state of humanity: The "sons of Mím" are described as being "at play," though this reference is not further explained in surviving sources. Heimdall raises the Gjallarhorn into the air and blows deeply into it, and Odin converses with Mím's head. The world tree Yggdrasil shudders and groans. The Hrym comes from the east, his shield before him. The Midgard serpent Jörmungandr furiously writhes, causing waves to crash. "The eagle shrieks, pale-beaked he tears the corpse," and the ship Naglfar breaks free thanks to the waves made by Jormungandr and sets sail from the east. The fire inhabitants of Muspelheim come forth. The continues that Jötunheimr, the land of the , is aroar, and that the Æsir are in council. The dwarfs groan by their stone doors. Surtr advances from the south, his sword brighter than the sun. Rocky cliffs open and the women sink. The gods then do battle with the invaders: Odin is swallowed whole and alive fighting the wolf Fenrir, causing his wife Frigg her second great sorrow (the first being the death of her son, the god Baldr). Odin's son Víðarr avenges his father by rending Fenrir's jaws apart and stabbing it in the heart with his spear, thus killing the wolf. The serpent