As the rumblings of the last war begin we are introduced to the various realms of the enemies of the gods. First the realm of the Ice Giants. The river Slith translates as "The Fearful." Swords and Daggers may refer to ice formations. The last two lines of this verse are lost.
Voluspa - Norse Mythology Book - Verse 36
“From the east there pours | through poisoned vales
With swords and daggers | the river Slith.”