Grading System in the Himalaya

フランスのグレード・システムより：

 ヨーロッパ・アルプスでよく使われているグレード・システムがヒマラヤでも使われている。
 別表のトレッキング・ピークのグレード・リストにあるピークのクライミングの参考として供する。

Himalayan climbs do not easily fit into normal grading systems because the major
difficulties are often not so much technical as those associated with acclimatization:
high altitude and / or large vertical intervals (the difference in height between
base camp and summit). That said, it has become most common to use the
French Alpine Grading System.

  F           Easy scree or gentle or short slopes up to 30°

  PD        Scrambling ground, slopes maybe 40°

  AD        Some pitched climbing or rock, snow/ice 45-50°

  D           Sustained pitched climbing on rock, ice up to 50-60°

  TD         Serious technical climbing, vertical ice

  ED1      Expect sustained vertical or overhanging sections

  ED2…   The ED series is open ended, and gets harder with each generation

        [Source]     Trekking and climbing in EPAL
                              Steve Razzetti

トレッキング・ピーク