Rutimytzi

https://bestiary.dragon-slayer.net/beast/627/gm
The only land route to reach the Rutimytzi camp is by way of the Diadem of Ingilbirt - otherwise, you have to climb the cliffs and the waterfall.
In Flysslagir, leaving a selection of the harvest at the base of the waterful is considered good luck. That's because the waterfall is near where the Rutimytzi are and leaving the gifts lowers the chance they'll attack.
The Rutimytzi use the Howling Teeth as a way of bringing new redcaps in the Middle Realm.