Please help me find an interview in LOTR-Extended documentaries.
 

I wasn’t sure where the best place to post would be, but DVD Talk seemed the most appropriate (since my question is DVD specific). Mods, feel free to move if so inclined.

I am looking for the interview on one of the Lord of the Rings Extended Edition DVDs with Viggo Mortensen; where he talks about the horse he bought for himself, and another horse he bought for one of the stunt riders.

I don’t even know which of the three discs it is on, much less which documentary. Any help is greatly appreciated.

I'm pretty sure that's in the documentary material for RotK.

Well that definitely helps, but even more specificity is appreciated if anyone knows.

I think it is on the fourth disc somewhere, the third disc documetaries are mostly related to JRR tolkein.