Openings · last 7 days
0
01 · Detected Opening History · the openings record · file CS-232291
When Third Fork Cabin reopens
Third Fork Cabin's openings record: every site-date Campsite Sniper detected turning available, logged and time-stamped. Refreshed hourly.
Openings · last 30 days
0
Openings · last 90 days
3
Only 3 openings in the last 90 days: not enough recent activity for a reliable pattern. A free Campsite Sniper alert watches around the clock instead, and pings you the moment one opens.
02 · Availability Outlook · Sep 18 – Oct 10, 2026 · of 1 monitored site
Of the 23 tracked site-nights (Sep 18 – Oct 10, 2026): 5 open for online reservation · 18 reserved.
Where the open windows are
78.3% of tracked site-nights are not currently open for online reservation. 5 of 23 remain open; here is where they are.
Load status
Sep 18 – Oct 10, 2026Not open online78.3%
Open site-nights5 / 23
Reserved (of online inventory)18 / 23
Weekday openings4
Weekend openings1
Of the open cabin-nights on mapped sites, 4 fall on weekdays and 1 on weekends (Fri–Sun).
Open dates by month
Sep 2026 – Oct 2026October is fully reserved. 0 of 10 tracked site-nights are open there — 10 reserved.
Holiday windows
Sites open per night · of 1 cabin| Window | Night | Sites open | Status |
|---|---|---|---|
| Labor Day | SAT Sep 5 | 0 | None open |
| SUN Sep 6 | 0 | None open | |
| MON Sep 7 | 0 | None open |
Labor Day: no online availability on any tracked night.
Availability
Most open cabin-nights · tracked window| Cabin | Open cabin-nights |
|---|---|
| 001 | 5 |
This cabin currently has 5 cabin-nights available.
Next windows
As of Sep 18, 2026 snapshotNext open dateTue · Sep 22
October0 of 10 · fully reserved
The next bookable night is Sep 22. Campsite Sniper can watch later dates for you.
Stays and site detail
5 open cabin-nights across 1 cabin at Third Fork Cabin, from the same hourly snapshot as everything above.
Multi-night stays. 2 2-night, 1 3-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 22 at site 001.
All 1 cabin with current availability
| Cabin | Max RV | Hookups | Open cabin-nights | Longest run | Dates |
|---|---|---|---|---|---|
| 001 | Not recorded | None | 5 | 3 nights | Sep 22, Sep 23, Sep 27, Sep 28, Sep 29 |
About Third Fork Cabin
Overview
Third Fork Cabin is a former guard station, first established in 1906 as Station 10 and renamed Third Fork in 1908. A cabin was built at that time, which existed until the site was rebuilt by the Civilian Conservation Corps in 1933. The current cabin's exterior has changed little since that time, with the exception of a metal roof being added sometime before 1984. The cabin is available between mid-April until late-October, and is accessible by car. Many modern comforts are provided at the cabin, but guests may need to bring some additional supplies and gear for their stay.
Facilities
This rustic cabin sleeps four people with one double bed and two single beds with mattresses. Other amenities include a propane cook range, table with chairs, hot water heater, indoor flush toilet, shower and propane heater and refrigerator. A picnic table, campfire ring and pedestal grill sit within the fenced yard.
A camp host is located at Antelope Campground, 18 miles east in the Sagehen Reservoir area, where firewood can be purchased.
While the water at the cabin is potable, guests should bring their own supply of drinking water as a back-up. Bedding, lighting, cookware and utensils are not provided. Guests are expected to clean the cabin before leaving.
Natural Features
Third Fork Cabin sits in a steep mountain landscape heavily forested with old-growth Ponderosa pine at an approximate elevation of 4,700 feet. Tall grasses and various hardwoods grow on the site. Small mountain streams containing native fish flow nearby, and the area is marked by unusual juxtapositions of basalt and granitic rock.
Wildlife watchers may spot elk or deer wandering through the area during dawn or dusk, as well as glimpse a bear or moose. Birders can look for a wide variety of bird species.
Nearby Attractions
Sagehen Reservoir is a popular recreation area about 18 miles east of the cabin, offering numerous trails for off-road vehicles, hiking, mountain biking and horseback riding. Click here for an Idaho OHV safety message. Fishing and boating are permitted in the reservoir, and there is also a picnic area at Sagehen Dam.
1 monitored cabinNo hookups1 shadedMax party 4
Getting there
From Boise, Idaho, take Highway 55 north to Horseshoe Bend. Turn left on Highway 52 and drive west 9 miles to the junction at Sweet/Ola Highway (no road number), then take a slight right. Take this road north 17 miles to Ola. Make a slight left and continue north through Ola on Road 618 (Third Fork Road) to the Third Fork Cabin. This road changes from pavement to gravel a few miles north of Ola. Third Fork Cabin will be on the right-hand side of Rd. 618.
Boise, ID541-351-1182
BikingCampingFishingHikingHuntingWildlife Viewing
View on Recreation.gov ↗ Get directions ↗
03 · Field Photos · roll CS-232291 · facility
Photo gallery
Roll CS-232291 · Third Fork Cabin · ID6 frames · facility
FAQ
How do I get a reservation at Third Fork Cabin?
Reservations for Third Fork Cabin are made through Recreation.gov. 78.3% of tracked site-nights are not currently open for online reservation; 5 of 23 remain open. Campsite Sniper has also detected 3 site openings here in the last 90 days, so further dates may appear. Pick a site on the map to see its calendar, or set a free Campsite Sniper alert. You complete the reservation yourself on Recreation.gov.
Does Campsite Sniper book this campground for me?
No. Campsite Sniper sends alerts and direct Recreation.gov links. It never books, pays for, holds, hoards, or resells reservations.
How current is this availability data?
Campsite Sniper re-checks public Recreation.gov availability for this facility every hour and republishes whenever anything changes. This facility's data last changed at Sep 18, 2026 10:18 UTC; an older timestamp means nothing has changed since that time, not that checking stopped. Always confirm final availability on Recreation.gov when you book.
How often do new openings appear at Third Fork Cabin?
Campsite Sniper detected 3 site-date openings here over the last 90 days, none in the last 7. A free alert watches around the clock and pings you the moment one appears.
Can I get a multi-night stay at Third Fork Cabin?
1 three-night opening is showing, counting only runs where the SAME site is free for all three nights. The soonest starts Sep 27 at site 001. Confirm and book on Recreation.gov.
Which month has the most availability at Third Fork Cabin?
September 2026, with 5 open site-nights in the current snapshot of 13.
When is the next open date at Third Fork Cabin?
As of the Sep 18, 2026 snapshot: the next open date is Tue, Sep 22. Detected openings can add earlier dates at any time; a free Campsite Sniper alert catches those the moment they appear.
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