Specifically relating to Mount Rainier National Park in Washington, this stamp is part of the group of stamps honoring the National Park Service Centennial.

Ascending to 14,410 feet above sea level, Mount Rainier stands as an icon in the Washington landscape. An active volcano, Mount Rainier is the most glaciated peak in the contiguous U.S.A., spawning six major rivers. Subalpine wildflower meadows ring the icy volcano while ancient forest cloaks Mount Rainier’s lower slopes. Wildlife abounds in the park’s ecosystems.

One of the most visited national parks, Mount Rainier is three miles above the lowlands. As a result, it is the most prominent peak in the Cascade Range.

Mount Rainier was established in 1899, making it one of the oldest national parks. 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.