The River Gairn is a river located in the Cairngorms National Park in Scotland. It flows through the Gairn Valley, eventually joining the River Dee. The river is known for its scenic beauty and is surrounded by lush landscapes, making it a popular spot for outdoor activities such as hiking and fishing. The River Gairn is approximately 10 miles long and originates from the Gairn Shiel, a mountain area in the region. Its waters are characterized by clear streams and rocky beds, providing a habitat for various wildlife. The river plays a significant role in the local ecosystem and contributes to the area's natural charm.