Back Yosemite Decimal System German سیستم درجه‌بندی یوسیمیتی Persian Yosemite Decimal System French Десятичная система Йосемити Russian Yosemite Decimal System SIMPLE Yosemite Decimal System Swedish YDS Ukrainian 優勝美地攀登難度等級 Chinese

Yosemite Decimal System

The Yosemite Decimal System (YDS) is a five-part grading system used for rating the difficulty of rock climbing routes in the United States and Canada.[1] It was first devised by members of the Sierra Club in Southern California in the 1950s as a refinement of earlier systems from the 1930s,[2] and quickly spread throughout North America.

  1. ^ Cite error: The named reference FoHGrading was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Secor was invoked but never defined (see the help page).

Rich TVX News Network Site

Rich TVX News Network Info

© MMXXIII Rich X Search. We shall prevail. All rights reserved. Rich X Search