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:
“vanished into nowhere Zen New Jersey leaving a trail of ambiguous
picture postcards of Atlantic City Hall,”
—Allen Ginsberg (b. 1926)
“So he with difficulty and labour hard
Moved on, with difficulty and labour he;
But he once passed, soon after when man fell,
Strange alteration! Sin and Death amain
Following his track, such was the will of Heaven,
Paved after him a broad and beaten way
Over the dark abyss, whose boiling gulf
Tamely endured a bridge of wondrous length
From hell continued reaching th’ utmost orb
Of this frail world;”
—John Milton (1608–1674)