High Sierra is a mountain range located in the eastern part of California, primarily within Yosemite National Park. It is known for its stunning granite peaks, deep valleys, and diverse ecosystems. The range includes some of the highest peaks in the contiguous United States, such as Mount Whitney, which stands at 14,505 feet. The area is popular for outdoor activities like hiking, rock climbing, and skiing. The Pacific Crest Trail runs through the High Sierra, offering breathtaking views and challenging terrain for adventurers. The region's unique geology and rich biodiversity make it a significant destination for nature enthusiasts and researchers alike.