Gifahringopfil

"danger peak" Forbidden place
The peaks are said to weep at night; that crying can be heard. The final echo of a maiden who threw himself off the cliff.
The outlaws hiding in The Keeper's Grove warn people away from the Gifahringopfil as being extremely dangerous and tell people to simply go around. This is because they use the caves for keeping the slaves they're trading.
The Hangman Tribe know about The Keeper's Grove and where the slaves are kept (Gifahringopfil) and use that information to blackmail the priests and outlaws.