Trail Difficulty Ratings
A simple colored symbol to classify a trail's difficulty was first used for ski trails and is now being used for hiking, bicycle, other trails and even airport security lines.
- Green circle - easy
- Blue square - moderate
- Black diamond - difficult
Other systems may be used in different locations.
Read more about this topic: Trail
Famous quotes containing the words trail and/or difficulty:
“It is not for man to follow the trail of truth too far, since by so doing he entirely loses the directing compass of his mind.”
—Herman Melville (1819–1891)
“So far as my experience goes, travelers generally exaggerate the difficulties of the way. Like most evil, the difficulty is imaginary; for what’s the hurry?”
—Henry David Thoreau (1817–1862)
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