 When the basin is full, Sigyn must empty it, and during that time the snake venom falls onto Loki's face, causing him to writhe in a tremendous fury, so much so that all earthquakes stem from Loki's writhings.In the poem "Hyndluljóð", the female jötunn Hyndla tells the goddess Freyja various mythological genealogies.In one stanza, Hyndla notes that Þjazi "loved to shoot" and that Skaði was his daughter.