Rainier is a prominent stratovolcano located in the Cascade Range of Washington State, USA. It stands at 14,411 feet (4,392 meters), making it the highest peak in the contiguous United States. The mountain is known for its stunning glaciers and diverse ecosystems, attracting hikers, climbers, and nature enthusiasts. The area surrounding Rainier is protected as Mount Rainier National Park, established in 1899. The park features numerous trails, scenic viewpoints, and a variety of wildlife. It is also an important site for scientific research, particularly in studying glacial and volcanic activity.