Start Date:
End Date:

Beginning at 1:34 p.m., Tuesday, Dec. 5, 2023, until further notice: Due to water over the roadway and damage underneath, the SR 503 Spur at milepost 35.7, near Cougar remains CLOSED in both directions. There is no estimated time for reopening the highway. Please avoid the area and use an alternate route.

WSDOT travel center map

Marble Mountain Sno-Park

Marble Mountain Sno-park is located in the South Cascades region. This Sno-park features 36 miles of trails for both motorized and non-motorized winter recreation.
  • Trail Length: 36 miles
  • Elevation: 2,700 feet

Good to knows


See Sno-Park rules

Land Manager

Mount St. Helens Volcanic Monument
(360) 449-7800

Law Enforcement

Cowlitz County Sheriff's Office
(509) 427-9490

Skamania County Sheriff's Office
(509) 427-9490

Directions & Maps

13 miles east of Cougar. Lewis River Road (SR 503/USFS Road 90) to USFS Road 83 north to USFS Rd 8312.


230 spaces

46.12982241, -122.1711745

Motorized grooming

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