Mount Rainier was established in 1899. At 14,410 feet, it dominates the landscape of a large part of western Washington State. The mountain is several miles taller than the lowlands to the west and one and one-half miles higher than the adjacent mountains! An active volcano, Mount Rainier last erupted approximately 150 years ago. Nearly two million visitors a year come to Mount Rainier National Park for hiking, moutain climbing, backpacking, and more.