My current campaign which I am GMing is set in David McGrogan's excellent Yoon-Suin . In particular, my game is set in the Oligarchies in the Mountains of the Moon. In real terms, this is a fantasy counterpart of Nepal, with several powerful city-states ruled by immensely wealthy elite with a very casual view to the lives and sufferings of their less-wealthy peons. Yetis and yaks abound. My players have so far traveled between two major cities, passing from one major river valley into another over a well-traveled trail through an otherwise-intimidating and labyrinthine mountain range. My players like calling sessions "episodes" As I've grappled with various shades of travel rules, balancing descriptive flow with time-saving brevity and mechanical satisfaction, I've been thinking a lot about mountainous travel in RPGs. The following is an unscientific thinking-aloud about mountains and their nature. If you look at Nepal or any other mountainous count...