We will be tracking in an area is dominated by black alder, coniferous trees and the pioneering silver birch. As we track , you should never miss the chance to collect birch bark. You can either stash it somewhere, or as I do carry it in a pocket on my jacket.
Birch bark is ideal for fires, as it catches easy, even when wet, and burn with a high calorific value. It is ideal for lighting from a striker.