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:
“The ghosts of the villages trail in the sky
Making a new twilight”
—William Stanley Merwin (b. 1927)
“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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