Originally posted by Fletch76:

Do you need cold gear stats to get into these caves or can I just stumble across one out in the forest

I would say, you do need either a real plentiful cache of Frost resistance mead or better the Wolf/Lox Cape. You will need to run all around in the Mountain biomes... Caves are not that plentiful so you will need to explore Mountains quite allot.

Originally posted by vanflyhightanzek:

Different seeds have biomes in different sizes. Had one once that was probably 70% mountains

Care to share that one's seed? I would be intrigued to play that with a fresh toon.

Originally posted by Blueheaven:

Cave I found had 6 hairs total. Killed maybe 10 wolf guys and 2 cultist. Destroyed all the wall hangings I saw. I guess I could have missed some but idts. Got 4 jute also.

It seems that those Fenris hairs are rarely dropped by "Ulv" which is the Werewolf looking enemy... they can be found only inside those new Caves... the Werewolves that spawn inside the Mountain Biome at nights are a different mob... I killed a night full of those and didn't get any Fenris hair from them.
I also ran through my now 6th cave... but I have never seen any Ulv drop Fenris hair... though I only started now to really check.
Those Cultists drop rarely that Red jute...

What you need is you need to get one of those special rooms it seems. There is a room that has a sort of "Altar" in the center and one big red jute curtain on the left and one on the right, also in front of those there is a big Fenris hair curtain thing hanging also. Those Fenris hair curtain thing have hair hanging on the bottom that you can interact with "E"... it looks like anywhere between 1 and 5 hair can hang there, I seen a couple 3 and 4 so far. Once those are taken off, you can destroy the top part for more hair also.
And don't forget to destroy any and all red jute curtains... they seemingly have a chance to drop Red jute, the 2 big ones in that special room can drop 2.