Raging Rifts

The elementals are coming from inside that cave. We only made it part of the way in before needing to retreat. I could see some flickering within, some strange glowing thing that looked almost like a tear in space from which the elementals poured forth! We managed to close one of these portals, but there are more. I need to stay with Nanthaz. It is up to you now, if you can manage. Destroy the rifts and find their source. I suspect it lies deeper within the cave.