Prince William Forest Park · Prince William County, VA
Pyrite Mine Loop
Loop through mature Piedmont forest to the ruins of the Cabin Branch Pyrite Mine — concrete foundations, an interpretive sign, and quiet woods. Good rainy-day pick when the river-trail crowds chase shelter.
Live · updated
Today
Park closure — trail is inaccessible today.
Primary activity: hiking
Parking Lot E along the park's Scenic Drive is closed for construction. The park is currently working to expand this parking area, and the lot will be closed while the expansion is being built. Visitors can still access the Mary Byrd Branch Trail and Quantico Cascades Trail by following trail reroute signs and parking vehicles in Turkey Run parking area. For your safety, please follow all closures and only park in designated parking spots.
Conditions
Score by activity
Hiking
Park closure — trail is inaccessible today.
Trail running
Park closure — trail is inaccessible today.
Dog walking
Park closure — trail is inaccessible today.
Score breakdown
- · 47°F air — Within comfort range, outside ideal
- ✓ AQI 33 — Clean air
- ✓ Trail: prime — No meaningful rain in the last 48 hours. Trail surface is dry and tacky — prime traction.
Trail facts
- Distance
- 3.8 mi round-trip
- Elevation gain
- 400 ft
- Surface
- dirt
- Difficulty
- easy
- Typical crowds
- rare
- Dogs
- Leash required
Trailhead
Parking
Trailhead lot · day-use fee.
Facilities
Bathrooms , drinking water. $10/vehicle 7-day pass at PWFP; ATB pass accepted.
Coordinates
38.5709, -77.3558 — Prince William County, VA.
Park
Part of Prince William Forest Park (official site →).