White horse (mythology) Poseidon was also the creator of horses, creating them out of the breaking waves when challenged to make a beautiful land animal. In Norse mythology, Odin's eight-legged horse Sleipnir, "the best horse among gods and men", is described as grey. Sleipnir is also the ancestor of another grey horse, Grani, who is owned by the hero Sigurd. In Slavic mythology, the war and fertility deity Svantovit owned an oracular white horse; the historian Saxo Grammaticus, in descriptions similar to those of Tacitus centuries before, says the priests divined the future by leading the white stallion between a series of fences
Sleipnir fetched and led forward." Hermóðr mounts Sleipnir and rides away. Hermóðr rides for nine nights in deep, dark valleys where Hermóðr can see nothing. The two arrive at the river Gjöll and then continue to Gjöll bridge, encountering a maiden guarding the bridge named Móðguðr. Some dialogue occurs between Hermóðr and Móðguðr, including that Móðguðr notes that recently there had ridden five battalions of dead men across the bridge that made less sound than he. Sleipnir and Hermóðr continue "downwards and northwards" on the road to Hel, until the two arrive at Hel's gates. Hermóðr dismounts from Sleipnir, tightens Sleipnir's