Railroads conquered the mountain passes of the west long before highways were constructed. Much engineering was required to construct a rail grade gentle and straight enough to accommodate the locomotives along with the freight and passenger cars they carried.
The railroad over Washington State’s Steven Pass was no exception, requiring extensive tunnels, fills and soaring trestles. The initial line which was opened in 1893, went over the summit of Stevens Pass via a series of switchbacks. To improve the line, the digging of a 2.6-mile long tunnel to eliminate the switchbacks was commenced in August 1897 and completed on December 20th, 1900. While the tunnel improved travel times across the pass, snow slides plagued the line eventually resulting in one of the worst train disasters in history.
Early on the morning of March 1st, two trains, which had become trapped on the pass by snow slides, where caught in a massive avalanche which swept both trains off the tracks into the canyon below killing most of the people on both trains. The final fatality count was 96, which included passengers and railroad employees that had come to help clear the tracks.

Disaster interpretive panel. Photos by Dave Helgeson
To prevent a repeat of this tragic event, extensive snow sheds were built over the rail line while a longer tunnel that would be built at a lower elevation to avoid avalanche prone areas was planned. The new tunnel with an impressive length of 7.8 miles was opened in 1929.
Today the abandoned portion of the old rail line, including the area where the disaster occurred, has been turned into an interpretive trail known as the Iron Goat Trail. The trail offers miles of hiking opportunities from three trailheads including a section suitable for those using a wheelchair. Interpretive panels along the way tell the story of construction challenges and the disaster.

Section of trail
When you go:
As mentioned, there are three areas to access the trail.
Scenic Trailhead just off Highway 2: Easy RV access at N47° 42.680 W121° 09.790
Martin Creek Trailhead: Several miles on a gravel road to reach, use your tow vehicle or dinghy. N47° 43.764 W121° 12.409
Wellington Trailhead: Rough asphalt to get there. N47° 44.834 W121° 07.655

Trail through old snowshed
A great option for enjoying the whole trail is dropping your RV at the Scenic Trailhead and taking your tow vehicle or dinghy to the Wellington Trailhead and starting your hike there, which results in a one way downhill hike.

One of several tunnels
Stevens Pass Ski area offers overnight electric sites for $25 per night. There is also a large place to disperse camp just off Highway 2 on Forest Service Road 6095 between the Scenic and Wellington Trailheads at N47° 43.196 W121° 07.270

Boondocking
Note that the turnoff for this spot is only accessible via eastbound Highway 2. There are also additional places to disperse camp farther up Forest Service Road 6095 but are best scouted out in advance before driving to them with your RV.
Hiking historic rail lines and remembering those that perished on them years ago, a solemn adventure in RVing!
See also: This Trail Leads To An Old Washington Railroad Tunnel

Dave Helgeson’s many roles in the RV industry started before he even had a driver’s license. His grandparents and father owned an RV dealership before the term “RV” had been coined, and Dave played a pivotal role in nearly every position of an RV dealership. He and his wife Cheri launched their own RV dealership in the Pacific Northwest. The duo also spent 29 years overseeing regional RV shows. Dave has also served as President of a local chapter of the Recreational Vehicle Dealers Association (RVDA), worked on the board of advisors for the RV Technician Program of a local technical college, and served as a board member of the Manufactured Home and RV Association. Dave’s reputation earned him the title of “The foremost expert on boondocking,” bestowed by RV industry icon, the late Gary Bunzer (The RV Doctor). When he’s not out boondocking, you’ll find Dave in the spotlight at RV shows across the country, giving seminars about all things RVing. He and Cheri currently roam in their fifth travel trailer, with Dave doing all the service, repair and modifications to his own unit.
Great story, enjoyed! Thanx for the information!