On a mountain path, your two feet are your means of getting home safely.
♦ Grade A
General hiking trails, activity duration of 1 - 3 days.
♦ Grade B
Medium - level vertical hiking trails with activity duration of 4 - 5 days, or 1 - 3 days on dangerous landforms.
♦ Grade C
High- level vertical hiking trails with activity duration of more than 5 days.
♦ Grade C+
High- level vertical hiking trails on rappelling and rock climbing landform.
2 GRADES IN SNOW SEASON
♦ Grade D
Snowfield hiking and vertical hiking trails which are conditionally open during controlled snow seaon.
♦ Grade E
Trails temporarily suspended during the snow season.