I have seen that sort of "tree-made" obstacles in various videos, and always wondered, who is it that builds all them dang things?
Even if you had land and could cut the wood for free, you're still talking about a pretty sizable amount of labor and tool costs involved. And how long do they last? It'd be fun to ride on that stuff for sure--but it seems like "bicycle riding" would have to be only one of your hobbies, track maintenance being the other........
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