A gravel road curving into a high mountain valley at first light, the peaks catching the sun.

Forest Service cabin or lookout

Porcupine Cabin

Forest Service cabin or lookout in Custer Gallatin National Forest, Park County, Montana. 6,475 feet. 17.1 miles from Clyde Park.

Managed by
Forest Service Custer Gallatin National Forest
Elevation
6,475 ft USGS elevation model, at the mapped point
Sites
1 1 cabin non-electric
Hookups
None listed
Reservations
Recreation.gov
County
Park County

Overview

Porcupine Cabin sits in the foothills of the Crazy Mountains at an elevation of 6,400 feet. It was built in 1914 after a previous structure burned down, and was remodeled by the Civilian Conservation Corps in 1934. Since its construction, the cabin has been used as temporary housing by Forest Service rangers while they were patrolling for timber poachers, watching for fires and monitoring livestock. Today, it is available year-round to outdoor enthusiasts, offering access to a variety of activities.

Guests can drive to the cabin in the summer, but a high-clearance, four-wheel drive vehicle is recommended due to road conditions. Winter access requires snowshoeing, skiing or snowmobiling up to 3 miles from the end of the maintained gravel road. Please park out of the way of snow plow equipment and do not block other users access or turn-around areas.

Guests are responsible for their own travel arrangements and safety, and must bring several of their own amenities.

Recreation

Guests can access the nearby trailhead for hiking, mountain biking and equestrian use, heading east into the Crazy Mountains. The trails are used by snowshoers and cross-country skiers in the winter.

Facilities

The 26 x 44 frame house has three rooms and a screened front porch. It has bunk beds with mattresses to accommodate up to eight people. It has a table and chairs, some cleaning equipment and a propane lantern available for use. A wood stove is available to heat the cabin. FIREWOOD IS NOT AVAILABLE FROM JUNE 1ST THROUGH SEPTEMBER 30TH. PLEASE BRING FIREWOOD OR GATHER FROM FOREST DURING SUMMER. DO NOT BURN PROVIDED FIREWOOD FOR OUTDOOR FIRES, EVER, AS IT IS EXTREMELY DIFFICULT TO REPLACE. Firewood is available for indoor use during winter as long as supplies last. An axe and splitting maul should be available.

An outhouse with vault toilet is located behind the cabin. A campfire ring is out front. (Please bring wood to burn outside).

Water, electricity and propane canisters for the lantern are not provided. Guests need to bring their own drinking water, cooking gear and food, bedding, fire starters (matches and newspaper), extra toilet paper, flashlights, first aid kit, cookware, dishes and utensils, among other necessities. The cabin will need to be cleaned and all trash carried out.

Equestrian trails are located nearby, and a small pasture near the barn is available for cabin renter's stock. Please be aware that the pasture fence may not be secure. Stock is not allowed near the cabin or inside the cabin fence.

Natural Features

The cabin sits on a hillside overlooking the grasslands of Shields Valley. This vantage point provides a majestic view of the Bridger Mountains and spectacular star gazing on a clear night. Guests can look out at the northern peaks of the Crazies from the front porch. Porcupine Cabin offers a quiet and fairly isolated retreat, however, there may be some passing traffic from recreational users accessing the nearby trailhead. Deer, moose, bears and elk may be spotted nearby. Several bird species that inhabit this area include bald eagles, owls, jays, western meadowlarks and mountain bluebirds.

The description, directions and fees are the Forest Service’s own words, from its record on Recreation.gov.

What people do here

  • biking
  • camping
  • hiking
  • wildlife viewing
  • winter sports

The land around Porcupine Cabin

The ringed pin is this cabin or lookout; the others are its nearest neighbours. Switch on forest roads or BLM routes to see the way in.

Interactive map. Drag to pan, scroll or pinch to zoom, and select any point to see which agency manages the land. Arrow keys pan and the plus and minus keys zoom when the map has focus. A list of every state with its share of federal land is on the Explore page.

Map layers

Layers
Base map
Legend

Federal land, by managing agency

  • Bureau of Land Management (BLM)
  • US Forest Service (USFS)
  • National Park Service (NPS)
  • US Fish and Wildlife (USFW)
  • Bureau of Reclamation (USBR)
  • Department Of Defense (DOD)
  • Bureau of Indian Affairs (BIA)
  • Other Federal
  • State
  • Local
  • Alaska Native Lands (Patented or Interim Conveyed)
  • Alaska Native Allotment

Federal campgrounds, by agency

  • Forest Service
  • Bureau of Land Management
  • National Park Service
  • Army Corps of Engineers
  • Reclamation, Fish and Wildlife and others

State and local land (USGS PAD-US)

  • State land
  • County and city land
  • Regional agency or district
  • Land trust or conservancy

Gaps with no tint inside public land are private parcels, often old mining claims and homesteads. They are not open to the public.

Dashed clay lines on the base map are unpaved tracks from OpenStreetMap. They show what exists on the ground, not what is legal to drive.

Select any point to see who manages the land.

Boundaries are approximate and land status changes. This map is a planning aid, not a survey or a statement of access. Confirm routes, closures and camping rules with the managing office.

Source: Recreation Information Database (Recreation.gov), record updated February 25, 2026. Elevation from the USGS 3D Elevation Program. Seasons, fees, water and fire rules change; the managing office has the final word.