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Help Preserve Cougar Mt Trails, Viewpoints, and Habitat!

King County and the City of Newcastle

are still actively pursuing acquisition of the DeLeo Wall

  • Dalpay Properties LLC has filed to renew the expiring Logging Permit.

  • King County and the City of Newcastle are still in discussion with the property owners.

  • The WA State Pollution Control Hearing Board has been delayed until later in 2021.


Read Latest Status Here (4/4/2021)

New Photos added

Upcoming Events


Crosscut News article about DeLeo Wall and the community efforts to save it.

DeLeo Wall Article by Randy Corman, City of Renton Council Member

Now: DeLeo Wall hillside and viewpoints

Photo courtesy of Klamath-Siskiyou Wildlands Center

Proposed: Help prevent this from occurring

The DeLeo Wall is a unique geological feature on the south side of Cougar Mountain that offers incredible views  from the trails that run along the ledge, at approx 900 ft. elevation. The hillside and almost-vertical "wall" are home to many animals, birds (including Bald Eagles), and 80+ year old trees; including Douglas firs, Madronas, and Maples. There are three streams running through the property, and into May Creek.  Click here and here to see a drone videos of the property, filmed by Steve Cobert.

The owners of the DeLeo Wall property recently applied for a logging permit with the Washington Department of Natural Resources. The DNR approved the application on May 18, 2018. The plans call for a clearcut, which will destroy the trails, impact streams, habitat, wetlands, and riparian zones. The result may be devastating erosion and runoffs into the May Creek Basin. Slash debris left behind from logging may also pose a significant fire hazard.

The Save DeLeo Wall Campaign is now supporting efforts by the City of Newcastle to delay logging, with the ultimate goal of preserving the property as open space. Please email us at if you'd like to stay updated on the next steps. You can also follow us on facebook or check our News page for updates.

Join our mailing list for status updates or to get involved

Line of Sight Areas from DeLeo Wall View Point.

Clear cut would be seen from all areas in green.

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