Greenstone Section 4 - 7.2mi Technical Hike

Ridgetop view with cloudy sky at Isle Royale National Park.

This is no casual walk. Chickenbone to Hatchet Lake is a 7.2-mile technical traverse through remote, forested wilderness with rocks, roots, and challenging slopes that demand map-reading skills and physical toughness. Hikers find forested ridgetop hiking punctuated by scenic vistas—particularly Mount Siskiwit in early and late season when foliage thins. This is one of Isle Royale's most difficult trails to access by water, meaning you've already proven your grit before you start. Go for solitude, navigation challenges, and true remote backcountry.

Quick facts

Distance Miles: 7.2
Route Type: Out-and-back backcountry section of Greenstone Ridge Trail
Difficulty Level: Strenuous
Elevation Gain Feet: 0

Trail profile

Distance Miles: 7.2
Route Type: Out-and-back backcountry section of Greenstone Ridge Trail
Difficulty Level: Strenuous
Elevation Gain Feet: 0
Estimated Time: 6-8 hours for the traverse; most hikers split this into multi-day backpacking route with overnight camping
Trail Surface: Rocky and rooty; 18 inches wide with uneven, technical footing
Trail Features: Forested ridgeline
Rocky and rooty terrain
Mount Siskiwit views
Scenic ridgetop clearings
Remote wilderness
Trail Highlights: Mount Siskiwit offers picturesque views in early and late season when vegetation thins. Hikers pursue this for solitude—it's one of the park's most remote and difficult-to-access trail sections.

Trailhead & access

Trailhead Location: Chickenbone Lake (western trailhead); Hatchet Lake (eastern trailhead). Access via ferry from Rock Harbor, Windigo, or water taxi from Rock Harbor Lodge.
Parking Lot Size: Not applicable; backcountry trail accessed by ferry
Parking Fill Time: Not applicable; ferry access via scheduled departures
Shuttle Required: 1
Shuttle Details: Isle Royale ferry services (Ranger III, Isle Royale Queen IV, Voyageur II) run May-September. Private water taxi available from Rock Harbor Lodge. Reservations required for ferry and permit. Most hikers access this remote trail section via ferry from Rock Harbor or Windigo.

Permits & conditions

Permits Required: Yes
Permit Details: Backcountry camping permit required for Isle Royale National Park. Reserve in advance through NPS website. Permits are limited and high-demand during peak season. No day-hiking permits available—overnight camping only for this section.
Fees: $7 per person per day entrance fee (children 15 and under free); America the Beautiful annual pass accepted ($80)
Trail Status: Open during operating season (April 16 - October 31)
Seasonal Closures: Isle Royale closes November 1 to April 15; ferry services end after September. Winter weather and isolation make off-season hiking impossible.

Facilities & rules

Restrooms At Trailhead: 0
Water Sources: Chickenbone Lake and Hatchet Lake are adjacent to trailheads; additional unnamed lakes and streams near the trail require water treatment (filter or purify all water)
Accessibility: Rocky, rooty, and steep; 18 inches wide with uneven footing. Not suitable for mobility devices or inexperienced hikers.

Safety & strategy

Hazards: Rocks and roots causing falls
Steep terrain and exposure on ridgeline
Changing trail conditions
Navigation challenges
Remote location with no cell service
Weather exposure
Dehydration risk on exposed sections
Hazard Details: The 18-inch-wide trail is technically challenging with rocks and roots; steep pitches demand attention. Ridgeline sections offer some exposure but not dramatic cliff edges. Changing conditions mean you'll need map and compass; GPS may fail in dense forest. This is the most remote section of the park's main trail system—emergency rescue takes hours. Carry emergency shelter and communication device.
Cell Service: Unknown; assume no service. Radios and emergency beacons are your lifeline.
Crowd Level: Ghost town; this remote section sees a fraction of Isle Royale's already-sparse traffic
Peak Crowd Times: July-August see slightly more hikers, but 'crowded' at Isle Royale still means you might see others every few miles
Best Season: Spring, Summer, Fall (April 16 - October 31 park operating window; ferry services May-September)
Best Time To Visit: Start your section hiking in late May through September when ferry services run regularly. June-July offer stable weather and minimal snow at higher elevations. August-September brings lower water levels, easier stream crossing, but heavier insect activity. Start your hike by early morning to maximize daylight on a remote trail where navigation errors cost you hours.
Tips Advice: Pack a map, compass, and know how to use both—trail conditions change and markers fade
Bring 2-3 liters of water minimum; lakes are present but require treatment
Trekking poles are not optional on roots and rocks; they save your knees on descent
Move fast on the exposed ridgeline sections; weather can close in quickly
Know your fitness level; 7.2 miles on technical terrain isn't 7.2 easy miles
Backcountry camping permits are mandatory; book months ahead
Inform a ranger of your route and expected return; you're responsible for self-rescue

More details

Park Area: Isle Royale National Park
Trail Markers: Trail is marked but changing conditions and dense forest make navigation challenging—map and compass essential
Dogs Allowed: No; pets are not permitted on Isle Royale trails
Biking Allowed: No; foot traffic only
Shade Level: Mostly shaded through forested sections; exposed ridgetop clearings offer views but limited sun protection
Emergency Contacts: NPS Ranger Stations at Rock Harbor or Windigo. In emergencies, use emergency beacon or paddle/boat to nearest ranger station.
Map Recommended: 1
Snow Dates: Not typical; winter closure (Nov 1 - Apr 15) prevents snow hiking
Mud Season: Early spring (late April-May) and late fall (September-October) may bring muddy conditions
Fall Colors Peak: Late September through early October
Bug Season: Peak mosquito and black fly season June-July; insect activity continues through August. Head net and insect repellent essential.
Insider Tips: Mount Siskiwit's best views require a scramble off-trail; go early or late season when foliage is thin
The Hatchet Lake Trail connects to Minong Ridge (harder still)—don't accidentally commit to that upgrade
Most hikers do this as part of a longer Greenstone Ridge backpack, not as an isolated section
Water quality: lakes are pristine but require treatment
The 'remote trail segment' rating means rescue times are long—plan conservatively
Recent Updates: Trail conditions vary by season; NPS reports changing trail status regularly during operating season
Family Friendly Notes: Not recommended for young children. The technical terrain, rocks, roots, and narrow trail pose fall risks. No bailout options on a remote island. Only experienced young hikers with good balance and footwork should attempt.
Nearby Facilities: West Chickenbone Campground, East Chickenbone Campground, and Hatchet Lake Campground are at/near the trailheads. Rock Harbor has facilities and ranger station. Windigo has ranger station and basic facilities.
Review Summary: Experienced backpackers rank this section as technically demanding but rewarding for those seeking solitude and navigation challenges. The remote location and rocky terrain demand respect and preparation, but hikers who come equipped report it's worth the effort.

Location

Frequently asked questions

Do I need previous backcountry experience?

Yes. This is remote and requires navigation skills, fitness for technical terrain, and comfort being far from help. Not a good first-time backpack.

Can I do this as a day hike?

No. Isle Royale only permits overnight camping; day hiking isn't allowed. Plan 2-3 days minimum including ferry time.

How hard is the navigation?

Trail is marked but conditions change and forest is dense. Map and compass are mandatory, not optional. GPS may fail under tree cover.

What if I get injured on the trail?

You're responsible for self-rescue. No cell service. NPS can dispatch rangers but rescue takes hours. Carry emergency communication device.

Is water always available?

Lakes and streams are present but ALL water requires treatment. Filter or purify everything. Carry backup water in case a source is unexpectedly dry.

What's the biggest challenge—fitness or navigation?

Both equally matter. The terrain is technical (rocks, roots, steep) AND navigation demands are high. Fit hikers who can't navigate get lost. Good navigators who aren't fit turn back.