![Hagerman Tunnel](https://www.aspentrailfinder.com/wp-content/uploads/2017/09/Hagerman-Tunnel-East-Portal-Leadville-150x150.jpg)
Connects: Colorado Midland Trail (Hagerman Tunnel Trail), Douglass City, Opal Lake (11,390 ft), Hagerman Lake (11,330 ft) Leadville, CO – Historic Hagerman Tunnel is an old trail tunnel between Leadville and Basalt, CO. The tunnel was the highest railroad tunnel…