Willmar State Hospital Underground Tunnel System
Trail facts
- Length
- 1.0 mi mapped
- Surface
- Concrete
Length sums the trail as the community maps it, not a trip distance. Hike out and back and you will cover it twice; check the shape of the route before you count on the figure.
This trail is community-mapped on OpenStreetMap. Access, conditions, and maintenance are not verified by the mapper or by us. Check with the land manager before you go.
Plan a day on this trail
Tell the Trip Builder where you are headed and it assembles a day-specific kit with weather, daylight, and terrain in mind.
Build your kitTrail data from OpenStreetMap contributors, snapshot 2026-07-11. Licensed under the Open Database License (ODbL) 1.0.