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Laurel Knob
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A Second Way (Variation Finish to Seconds) 
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Black Flag 
Buried Treasure 
Canyons of Laurel 
Central Pillar Direct Finish 
Central Pillar of Laurel 
Clippidy Doodah... 
Clowns to the Left of me 
Cotton Pony  
Defective Sonar 
Dike hike - Monster Groove 
Dillard Arete 
Don't call me surely 
Dry streak 
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Friction Addiction 
Fruit of the Poisonous Tree 
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No Sir (?) 
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Pirate's Cove direct finish 
Puff The Magic Dragon 
Quantum Mechanic's Arete 
Rejected Radar 
Route Of The Living Dead 
Squirrely man 
Steep in the Teacups of Laurel 
Stegg, Roy Fathom ALT. 
Stellar Sonar 
Stemming Laurel 
Use It Or Luge It 
Use it or Luge it Direct Start 
Walkin' Da Plank 
Wild Turkeys 
Wild Wild West  

Defective Sonar 

YDS: 5.12a French: 7a+ Ewbanks: 25 UIAA: VIII+ British: E5 6a

Type: Trad, 8 pitches, 800', Grade IV
Consensus:  YDS: 5.12a French: 7a+ Ewbanks: 25 UIAA: VIII+ British: E5 6a [details]
FA: Ralph Fickel, Arno Ilgner, Shannon Stegg
New Route: Yes
Page Views: 4,360
Submitted By: Sean Cobourn on Sep 5, 2008
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Ralph Fickel following the headwall. Who says NC ...

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2013 Closures MORE INFO >>>


Laurel's newest and quite probably hardest route! Originally begun years ago by Ralph Fickel and Burton Moomaw. See topo and photo for visual description and here is what Arno reported on the CCC site:
Defective Sonar (between Fathom and Forbidden Fruit through an obvious right-angling crack at about 200' height)
FA info: Ralph Fickel, Arno Ilgner, Shannon Stegg
8 pitches, rated IV 5.11a, C2
On June 16 we completed this route that Burton Moomaw and Ralph Fickel started back in 1991. Their high point was three and a half pitches up, through the crack and into the bulging face climbing.
I went back in July with Shannon and freed all the moves but haven't yet redpointed it. The third pitch is a 130-foot diagonalling crack that has "challenging" pro and I think it is the crux of the route, although the next pitch is pretty cruxy also with a iron cross move to a blind hold.
The climb has much variety on it, from thin slab climbing on the first two pitches, difficult crack climbing on the third pitch, "interesting" face climbing on the fourth, beautiful groove climbing on the fifth, thin/technical face on the sixth, deep groove climbing on the seventh, and easy slab on the eight.


Between Forbidden Fruit and Fathom


NC trad rack- see topo

Photos of Defective Sonar Slideshow Add Photo
Arno leading pitch one
Arno leading pitch one
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By arno
Sep 30, 2010
rating: 5.12a 7a+ 25 VIII+ E5 6a

I'm not sure how to edit the info on this post, but...
It's all free now at 5.12a.

By saxfiend
From: Decatur, GA
Oct 27, 2010

Updated. Congratulations on freeing this one, Arno!

By burlap submariner
Oct 19, 2011

amazing line, cant wait to get at it this spring. Anyone verify the difficulty of placing pro on the diagonal crack on the third pitch?

By andjoely
From: Clemson, SC
Oct 19, 2011

The diagonal crack eats pro - lots of offset small cams make the protection much more straightforward to place, but it could be done without for sure. You can leave much of the rack at the 3rd pitch belay till you rap back down. I think the 4th pitch has the hardest moves. The poorly protected 5.10- climbing 15 or 20 feet above the 1st pitch belay is the only part of the route that is scary. Certainly one of the best long routes if not the best in the state.

By thomas kelley
Jul 25, 2013

I took the second pitch and I recall that section off the belay being a bit runout but Burton was at the belay saying things like "just link moves together", etc. I couldn't concentrate and after I placed a bolt I just came down and let him finish the pitch. I never did like people giving beta from the belay on a route nobody has ever been on. TK