Hvergelmir
In the Poetic Edda, Hvergelmir is mentioned in a single stanza, which details that it is the location where liquid from the antlers of the stag Eikþyrnir flow, and that the spring, "whence all waters rise", is the source of numerous rivers.Some of these rivers lead to the dwelling of the gods (such as Gömul and Geirvimul), while at least two (Gjöll and Leipt), reach to Hel.In Gylfaginning, Just-as-High explains that the spring Hvergelmir is located in the foggy realm of Niflheim: "It was many ages before the earth was created that Niflheim was made, and in its midst lies a spring called Hvergelmir, and from it flows the rivers called Svol, Gunnthra, Fiorm, Fimbulthul, Slidr and Hrid, Sylg and Ylg, Vid, Leiptr; Gioll is next to Hell-gates.[5] The spring is mentioned a third time in Gylfaginning where High recounts its source: the stag Eikþyrnir stands on top of the afterlife hall Valhalla feeding branches of Yggdrasil, and from the stag's antlers drips great amounts of liquid down into Hvergelmir.Third notes that Hvergelmir yet worse than the venom-filled Náströnd because—by way of quoting a portion of a stanza from the Poetic Edda poem Völuspá—"There Nidhogg torments the bodies of the dead".