From the introduction: Gray Snow is an adventure designed for 3-4 Level-1 to 3 PCs. It’s a site-based adventure where PCs will move from one location to another, choosing various paths to survive, and hopefully reaching the final area at the other side of the island. It also serves as a good introduction to the Gnosis system for new players. In Gray Snow, the PCs will survive a plane crash in the Alaskan wilderness and must survive the cold and the dangers that brought down their plane.