Pick a site on the map to see its availability calendar.
Only 2 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.
Of the 9 tracked site-nights (Sep 18 – Sep 26, 2026): 5 open for online reservation · 4 reserved.
Of the open site-nights on mapped sites, 4 fall on weekdays and 1 on weekends (Fri–Sun).
September holds the most room. 5 of 9 site-nights are still open there.
| 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.
| Site | Open site-nights |
|---|---|
| 1 | 5 |
This site currently has 5 site-nights available.
The next bookable night is Sep 20. Campsite Sniper can watch later dates for you.
Multi-night stays. 1 2-night, 1 3-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 20 at site 1.
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| 1 | Not recorded | None | 5 | 5 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24 |
Hidden Valley Group Site offers a large open space surrounded by scenic forest. Ideal for groups of up to 200 people to gather amidst a beautiful outdoor setting. This is a great facility for family reunions, weddings, birthday parties, youth group outings, graduation celebrations, or large outdoor events and can be used as an overnight campground as well.
Both camping and picnicing are possible at this group site. Nearby at the Tie City and Summit Trailheads exists an extensive bike trail system.
The picnic site can accommodate up to 200 guests and 50 vehicles at a time. Vault toilets, picnic tables, and grills are provided.
Handpump water may be available in this campground from May to September. These dates may vary due to weather, well and/or pump maintenance, and water testing requirements. As such, we encourage you to bring your own water or call ahead.
This group site lies just east of Laramie, Wyoming, at an elevation of 8,600 feet.
The Medicine Bow-Routt National Forests and Thunder Basin National Grassland encompass nearly 3 million acres from central and northeastern Wyoming to north-central Colorado.
Lodgepole pine, aspen, fir, spruce, and shrubs dominate the landscape of the national forests. The Grassland boasts numerous species of grasses and wildflowers that add color to the landscape during warmer months.
Black bear, bobcat, coyote, elk, mule deer, and moose are just some of the many animals that inhabit these rich and diverse lands.
Many more outdoor opportunities exist in the surrounding national forests and grasslands, including hiking, biking, camping, horseback and off-road vehicle riding, fishing, hunting, sightseeing, and winter sports.
From Laramie, Wyoming, take I-80 east to exit 323 at Happy Jack Road. Turn left onto Happy Jack Road and follow it past the Summit Visitor Center. Take Forest Road 705 for a mile southeast to picnic area.
View on Recreation.gov ↗ Get directions ↗




Reservations for Hidden Valley Group Site are made through Recreation.gov. 5 of 9 tracked site-nights are currently open (55.6%). Campsite Sniper has also detected 2 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.
No. Campsite Sniper sends alerts and direct Recreation.gov links. It never books, pays for, holds, hoards, or resells reservations.
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 16:19 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.
Campsite Sniper detected 2 site-date openings at Hidden Valley Group Site in the last 7 days, 2 over 30 days and 2 over the last 90.
1 three-night opening is showing, counting only runs where the SAME site is free for all three nights. The soonest starts Sep 20 at site 1. Confirm and book on Recreation.gov.
September 2026, with 5 open site-nights in the current snapshot of 9.
As of the Sep 18, 2026 snapshot: the next open date is Sun, Sep 20. Detected openings can add earlier dates at any time; a free Campsite Sniper alert catches those the moment they appear.
Lakefront, hookups, your RV length, weekends only - set it as picky as you want.
We run paced availability checks for Hidden Valley Group Site. One watch covers every matching site.
When a match opens, you get a push with a Recreation.gov link so you can review and book it yourself.