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Four trail classification symbols: S1 with white circle, S2 green landscape, S3 blue waves, S4 black mountains.

Four trail classification symbols: S1 with white circle, S2 green landscape, S3 blue waves, S4 black mountains.
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A set of four trail classification symbols used for signs on shared recreational trails. They should represent: S1 - white, easiest, flat. S2 - green, Easy, gentle slopes. S3 - blue - intermediate, moderate undulation. S4 - Black, advanced, extreme topography. See more

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