Marble Mountain Snopark sits within Gifford Pinchot National Forest as the established staging point for the Mount Saint Helens Worm Flow winter climbing and skiing route. Two large parking lots accommodate cars, trailers, and RVs, with tent camping available in the lots or the adjacent forest area. A warming hut operates December through March, and two vault toilets are on-site. No cell service on AT&T. Snowmobile traffic keeps daytime noise levels high on busy weekends, so climbers planning an alpine start should expect activity around the lots. Pets are allowed. Those researching pet-friendly campgrounds near Gifford Pinchot National Forest will find several additional options in the surrounding area. Pack layers and plan to arrive the evening before any early-morning summit attempt.
RV Road Trip Guides
Map & DirectionsMarble Mountain Snopark is located in Washington near Cougar
Coordinates
46.13049131 N
122.17089875 W
Connectivity
- T-MobileNo Coverage
- VerizonNo Coverage
- AT&TNo CoverageVerified by 1 userLast on 8/1/26
Connectivity
- T-MobileNo Coverage
- VerizonNo Coverage
- AT&TNo CoverageVerified by 1 userLast on 8/1/26
Access
- Drive-InPark next to your site
Features
For Campers
- ADA Access
- Trash
- Toilets
- Pets
For Vehicles
- Pull-Through Sites
Drive Time
- 1 hr 25 min from Longview, WA
- 1 hr 29 min from Portland, OR
- 2 hrs 15 min from Olympia, WA
- 3 hrs 34 min from Yakima, WA






