As an alternative to the traditional signal fire, you can create what the US Army calls a “tree torch”. If you can locate a tree in a clearing which has green leaves and is a considerable distance away from other trees (thus less likely to spark a forest fire), you can use it to make a giant torch. Load all easily reachable branches with dry tinder that will light easily. When lit, the tinder will burn while the living tree creates a massive smoke plume which will be visible for miles.
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