Marble Mountain Group Picnic Site
Gifford Pinchot National Forest — lakeside, hiking
Location: Cougar, WA, WA
Price: From $100 per night
Rating: 4 out of 5 (0 reviews)
Season: May through October
Marble Mountain Group Picnic Site is on the Gifford Pinchot National Forest and is located at the Marble Mountain SnoPark on the south side of Mount St. A part of the WA State Sno-Park program in the winter months, Marble Mountain Group Picnic Site is offered as a day use group picnic area Saturdays only, May - September. (The site may be available for reservation as early as April or as late as June depending on conditions, i.e., whether there is snow on the ground or not).
Cell coverage (FCC estimate): none signal. Actual signal may vary in remote areas.
Amenities: Fire Rings, Picnic Tables, Vault Toilets, Drinking Water, Electric Hookups
Availability alerts: Set a free cancellation alert at camperwatch.org/campground/marble-mountain-group-picnic-site to be notified when sites open up.
Marble Mountain Group Picnic Site offers gorgeous alpine scenery on the south side of Mount St. Helens with maintained facilities including vault toilets and plowing. Campers appreciate the bathroom access and scenic mountain setting.
Wildlife alert: Mountain goats, American pikas, mule deer, Steller's jays, Canada jays, and common garter snakes inhabit the area.
Insider tips for Marble Mountain Group Picnic Site: Book early as this is a federal campground with high demand Expect steep 1,100 foot incline through forest for first 2.5 miles before opening to rocky alpine terrain Available Saturdays only during operating season for day use
Skip Marble Mountain Group Picnic Site if: Expecting overnight camping - this is a day-use group picnic site only. Needing RV hookups - no hookups available. Visiting outside May-October season - seasonal operations only.
Best time to visit Marble Mountain Group Picnic Site: May-September — Official day-use group picnic area operation period, though availability depends on snow conditions and may shift between April-June.
Nearby campgrounds: Kalama Horse Camp (Amboy , WA), Lower Falls Campground (Trout Lake, WA), Lewis River Hc (Wa) Gifford Pinchot Nf (Trout Lake, WA), Paradise Creek Campground (CARSON, WA).
Cell Phone Coverage at Marble Mountain Group Picnic Site
Cell signal at Marble Mountain Group Picnic Site (Cougar, WA): none overall signal based on FCC broadband data.
Coverage data source: FCC Broadband Data Collection (BDC). Actual signal may vary due to terrain, tree cover, and distance from towers. Camper reports are more reliable than coverage maps in remote areas.
Marble Mountain Group Picnic Site is on the Gifford Pinchot National Forest and is located at the Marble Mountain SnoPark on the south side of Mount St. A part of the WA State Sno-Park program in the winter months, Marble Mountain Group Picnic Site is offered as a day use group picnic area Saturdays only, May - September. (The site may be available for reservation as early as April or as late as June depending on conditions, i.e., whether there is snow on the ground or not).
Verified facts
RIDB / Recreation.gov official databaseAmenities
RIDB /facilities /campsites · owner-verifiedStraight talk
CamperWatch intel · curated from camper reportsKnown issues, each with the workaround. Read before you book.
Insider tips & when to go
CamperWatch intel · hand-curated entryBook early as this is a federal campground with high demand
Expect steep 1,100 foot incline through forest for first 2.5 miles before opening to rocky alpine terrain
Available Saturdays only during operating season for day use
Official day-use group picnic area operation period, though availability depends on snow conditions and may shift between April-June
Things to do nearby
RIDB /activities /recareas + intelConditions today
LiveCell signal
FCC BDC · quarterly datasetFCC maps are theoretical — camper reports confirm signal.
Wildlife nearby
iNaturalist · research-grade · 8 kmLocation
Leaflet · OpenStreetMap tiles
Getting there →
From I-5, travel east on state route 503 towards Cougar for 30 miles. At Skamania County line, continue straight on Forest Road 90. Turn left on Forest Road 83, Ape Cave/Lava Canyon. Continue straight for 6 miles. Turn left at signs for Marble Mountain Sno-park.
Campground entrance
Google Maps APICommunity
#community · posts, photos & Q&A · AI-moderated (Claude Vision)Pro tips
- Book on recreation.gov exactly 6 months ahead at 10am ET — Gifford Pinchot National Forest fills fast in peak season.
- Check current road conditions at Gifford Pinchot National Forest before arrival — seasonal closures common.
Frequently asked questions
RIDB facts + intel · FAQPage schema, speakableHow much does Marble Mountain Group Picnic Site cost per night?+
What season is Marble Mountain Group Picnic Site open?+
Does Marble Mountain Group Picnic Site have hookups?+
What is the maximum RV length at Marble Mountain Group Picnic Site?+
How do I make reservations at Marble Mountain Group Picnic Site?+
What is the cell service like at Marble Mountain Group Picnic Site?+
What season is Marble Mountain Group Picnic Site open, and what are check-in times?+
●Data sources on this page
CamperWatch never fabricates data. Where data is unavailable, it is not shown.
Nearby Campgrounds
Own a campground nearby?
List free on CamperWatch — we take 5% only on bookings we send. No monthly fee.