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)
“I am continually fascinated at the difficulty intelligent people have in distinguishing what is controversial from what is merely offensive.”
—Nora Ephron (b. 1941)
Related Subjects
Related Phrases
Related Words