Polly Dome is a prominent

granite dome Granite domes are domical hills composed of granite with bare rock exposed over most of the surface. Generally, domical features such as these are known as bornhardts. Bornhardts can form in any type of plutonic rock but are typically composed o ...

rising above the northwest side of Tenaya Lake and

Tioga Road Tioga may refer to: United States communities *Tioga, California, former name of Bennettville, California *Tioga, Colorado *Tioga, Florida * Tioga, Iowa *Tioga, Louisiana *Tioga, New York, a town in Tioga County *Tioga County, New York, a county at ...

in the

Yosemite Yosemite National Park ( ) is an American national park in California, surrounded on the southeast by Sierra National Forest and on the northwest by Stanislaus National Forest. The park is managed by the National Park Service and covers an ar ...

high country. The dome, more than 3 kilometers (~2 miles) long, is a substantially intact mass of granitic rock that has withstood heavy

glaciation A glacial period (alternatively glacial or glaciation) is an interval of time (thousands of years) within an ice age that is marked by colder temperatures and glacier advances. Interglacials, on the other hand, are periods of warmer climate betw ...

and exfoliation. Forest clings to the less-steep parts of its north and west slopes. The southwest end of Polly Dome consists of the

Stately Pleasure Dome Stately Pleasure Dome is the unofficial name for the prominent south-southwestern portion of Polly Dome, a granite dome on the northwest side of Tenaya Lake and Tioga Road in the Yosemite high country. Stately Pleasure Dome consists of glaciated ...

, lower than Polly Dome, but rising very steeply from the shore of the lake. Polly Dome's summit has unobstructed views east to the

Cathedral Range The Cathedral Range is a mountain range immediately to the south of Tuolumne Meadows in Yosemite National Park. The range is an offshoot of the Sierra Nevada. The range is named after Cathedral Peak, which resembles a cathedral spire. Geograp ...

, north over

Tuolumne Meadows Tuolumne Meadows () is a gentle, granitic dome, dome-studded, sub-alpine meadow area along the Tuolumne River in the eastern section of Yosemite National Park in the United States. Its approximate location is . Its approximate elevation is . The ter ...

to the

Sierra crest The Sierra Crest is a roughly generally north-to-south ridgeline that demarcates the broad west and narrow east slopes of the Sierra Nevada and that extends as far east as the Sierra's topographic front (e.g., Diamond Mountains and Sierran esc ...

, northwest over the

Grand Canyon of the Tuolumne The Grand Canyon of the Tuolumne is the notable canyon section of the river valley of the Tuolumne River, located within Yosemite National Park, in Tuolumne County and the Sierra Nevada, California. As defined by the United States Geological ...

and southwest to

Half Dome Half Dome is a granite dome at the eastern end of Yosemite Valley in Yosemite National Park, California. It is a well-known rock formation in the park, named for its distinct shape. One side is a sheer face while the other three sides are smooth ...

References

Granite domes of Yosemite National Park Mountains of Mariposa County, California Hills of California {{MariposaCountyCA-geo-stub