Twin Lakes is a set of connected lakes at 8,563 feet (2,610 m) at the base of the southeastern slope of Mammoth Mountain, in Mono County of eastern California. They are in the eastern Sierra Nevada, and within the Inyo National Forest. Twin Lakes are the lowest lakes in the Mammoth Lakes Basin. On one side of the lake are lava cliffs that were formed by eruptions of Mammoth Mountain. The other side of the lake has the Inyo National Forest's Twin Lakes Campground, and Tamarack Lodge of the Mammoth Mountain Ski Area.
There are also a pair of lakes named Twin Lakes further north in the Eastern Sierra Nevada by the town of Bridgeport, California, in the Humboldt-Toiyabe National Forest.
Open Water Swimming
Richard Gardner planned and is executing the unique Sierra Nevada Open Water 4 MS, a high-altitude swim and multiple sclerosis campaign in Shaver Lake in the Sierra Nevada mountains in California. The Sierra Nevada Open Water 4 MS includes lake swims in Shaver Lake, June Lake, Lake Mary, Twin Lakes, Gull Lake, Lake Sabrina, Tenaya Lake, Lake Edison, Huntington Lake, Florence Lake, and Bass Lake in 2017-2018.
The Sierra Nevada is a mountain range in the Western United States, between the Central Valley of California and the Basin and Range Province. The vast majority of the range lies in the state of California, although the Carson Range spur lies primarily in Nevada. The Sierra Nevada is part of the American Cordillera, a chain of mountain ranges (cordillera) that consists of an almost continuous sequence of mountain ranges that form the western "backbone" of North America, Central America, South America and Antarctica.