I used the snowmobile until I nearly went over a cliff. I didn't pause to skin any animals for fear of running out of oxygen. It seems there are three different kinds of leopards (not counting exotic) used in crafting, only one of which is in abundance. I'm hoping the others live on the other side. It turns out the fork isn't really a fork, because my next golden path mission I had to choose again between Amita and Sabal, on whether to defend or burn an opium farm (I went with the former).
EDITED: 16 Dec 2018 12:10 by DSMITHHFX