Washington · natural crag
Great Northern Slab
natural crag in Washington.
Open a pin for place details and move the map to explore nearby climbing.
Open the full mapEssential crag checks
Access, closures, permits & safety
From the Index Town Walls parking area, use the established Lower Town Wall approach and follow the sector guide to Great Northern Slab. Stay clear of the railroad tracks.
Use the Index Town Walls parking area and observe posted parking limits; do not drive past the gate toward the tracks.
Check the posted board for any spring falcon nesting closure before climbing; the affected routes and dates can change.
Inspect granite and anchors, protect against falling objects, and stay off the active railroad corridor.
Closures and permit rules can change without notice. Recheck the official land manager before departure.
Check before visiting
Visit information and facilities
Access, permits, seasonal closures and parking conditions can change.
- Address
- Washington, United States
- Climbing styles
- natural crag
About this crag
Great Northern Slab is a granite climbing sector at the Lower Town Wall in Index, Washington. Mountain Project lists 13 climbs in this sector. Washington State Parks took over management of the Lower Town Wall in 2026 to preserve public climbing access.
Recommended equipment
Bring equipment appropriate to the climbing style and local conditions. A helmet is strongly recommended.
More climbing places in Washington
Keep exploring
See it on the map
Explore nearby climbing places and active crews on Climb Map.