New routes on the peaks were explored as safety equipment and skills improved and eventually climbs rated at above 5. 9 on the Yosemite Decimal System difficulty scale were established on Grand Teton.

The Yosemite Decimal System ( YDS ) of grading routes was initially developed as the Sierra Club grading system in the 1930s to rate hikes and climbs in the Sierra Nevada range.

However sometimes, usually in indoor competitions, the standard Yosemite Decimal System is substituted with a similar but more accurate system, in which the technical difficulty of the problem is measured by a single 3 or 4 digit number ( e. g., 810 or 1150 ).

In the U. S., scrambling is Class 3 in the Yosemite Decimal System of climb difficulties.

Yosemite Decimal System

sv: Yosemite Decimal System

# REDIRECT Yosemite Decimal System

The following table makes a comparison with the WI system and the Yosemite Decimal System.

* Yosemite Decimal System

Aid climbing is sometimes errantly referred to as " Class 6 " climbing, since its reliance on ascent via one's equipment rather than merely being protected by it is regarded by purists as falling outside the traditional Classes 1-5 Yosemite Decimal System rankings that rely on making progress with one's hands and feet in direct contact with the rock alone.

In the United States, the Yosemite Decimal System is used to rate sport climbs.

Korea uses the Yosemite Decimal grading system.

The most commonly used rating systems in the US are the Yosemite Decimal System and the " V " bouldering grade.

* The second class in terms of hiking difficulty in the Yosemite Decimal System

The climbs are between in length, and range in difficulty from beginner to expert ( 5. 4-to 5. 12 + on the Yosemite Decimal System ).

The Roaring Fork Valley between it and Difficult Campground, 3 miles ( 4. 8 km ) east of Aspen, has many popular rock climbing areas, some with grades up to 5. 12 under the Yosemite Decimal System.

* The first class in terms of hiking difficulty in the Yosemite Decimal System

* The third class in terms of hiking difficulty in the Yosemite Decimal System

The majority of the routes in the gorge are for advanced climbers in 5. 10-5. 12 range of the Yosemite Decimal System with about an equal number of traditional and sport climbs.

Some routes and their rating in the Yosemite Decimal System are represented in the picture on the right.

* Yosemite Area Regional Transit System ( YARTS ) provides service along State Routes 120 and 140 to Yosemite National Park.

* Yosemite Area Regional Transportation System, or YARTS, connects Merced with Yosemite National Park.

Yosemite Area Regional Transit System ( YARTS ) also runs along U. S. 395 from Mammoth Lakes to Lee Vining before entering Yosemite National Park.

In California is located one of the most popular of the national parks -- Yosemite.

The western terrestrial garter snake ( Thamnophis elegans ) in California is largely aquatic and depends heavily on two species of frog that are diminishing in numbers, the Yosemite toad ( Bufo canorus ) and the mountain yellow-legged frog ( Rana muscosa ), putting the snake's future at risk.

* 1890 – Yosemite National Park is established by the U. S. Congress.

The Yosemite bowline is often used in climbing.

A well-known result of this process is Half Dome, located in Yosemite Valley.

Yosemite Valley ( ) is a glacial valley in Yosemite National Park in the western Sierra Nevada mountains of California, carved out by the Merced River.

The valley is renowned for its natural beauty, and is widely regarded as the centerpiece of Yosemite National Park, attracting visitors from around the world.

Yosemite Valley is located on the western slope of the Sierra Nevada mountains, 150 miles ( 240 km ) due east of San Francisco.

Yosemite Valley represents only one percent of the park area, but this is where most visitors arrive and stay.

The first view of Yosemite Valley many visitors see is the Tunnel View.

Above and to the northeast of Half Dome is Cloud's Rest ; at 9926 feet ( 3025 m ), the highest point around Yosemite Valley.

The Merced then flows down to the end of its canyon ( Little Yosemite Valley ), where it begins what is often called the Giant Staircase.

The youngest Yosemite Valley pluton is the 87 million year old Half Dome granodiorite, which makes up most of the rock at Glacier Point, the Royal Arches, and its namesake, Half Dome.

Near Glacier Point there is 2, 000 feet ( 600 m ) of mostly glacial sediment with at least six separate sequences of Lake Yosemite sediments.

The biological community on the floor of Yosemite Valley is a diverse one, with more than 400 species of grasses and wildflowers and thousands of species of insects having been identified there.

Yosemite is now a world rock climbing attraction.

Half Dome is a granite dome in Yosemite National Park, located in northeastern Mariposa County, California, at the eastern end of Yosemite Valley — possibly Yosemite's most familiar rock formation.

Tis-sa-ack is the name of a Mono Lake Paiute Indian girl in the Yosemite Native American legend.

Whitney to Yosemite valley, and which is part of the Pacific Crest Trail that goes from Mexico to Canada.

Bridalveil Fall is one of the most prominent waterfalls in the Yosemite Valley in California, seen yearly by millions of visitors to Yosemite National Park.

The large waterfalls in Yosemite Valley are examples of this phenomenon, which is referred to as a hanging valley.