In the 1890s the Great Northern Railway was built along the Skykomish, South Fork Skykomish, and Tye Rivers, crossing the crest of the Cascades at Stevens Pass. Today the track is owned by BNSF Railway, known as the Burlington Northern Railroad from 1970 to 1995. Stevens Pass is named after the Great Northern surveyor John Frank Stevens. Two railroad tunnels, both called Cascade Tunnel, were built at Stevens Pass. The first one was built slightly north of the pass. It was replaced in 1929 with the New Cascade Tunnel, which at long was for nearly 60 years the longest railroad tunnel in North America and is still the longest in the United States. The New Cascade Tunnel is a few miles south of Stevens Pass. Its western entrance is near the confluence of Tunnel Creek and the Tye River. A small amount of the water flows out of both tunnels into the Tye River. An interpretive center for the Iron Goat Trail, located at Scenic on the upper Tye River, describes the history of the area including the old railroad and new trail. The interpretive center was built near the site of one of the greatest railroad tragedies in American history, the Wellington Disaster.