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Clamshell Cave

Routes Sorted
L to R R to L Alpha
5.8 Cube Crack T,TR 
Clamshell Crack T 
Eagle's Prey T,S 
Eagle's Way  S 
Forty-Four Fifty T,S 
Keep Clam T 
Noisy Oyster T 
Shrimp Salad T 
Stolen Thunder S 

Clamshell Cave Rock Climbing 

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Location: 47.54524, -120.72914 View Map  Incorrect?
Page Views: 8,913
Administrators: Scott Coldiron, Nate Ball, Jon Nelson, Micah Klesick, Kristine Hoffman (sitewide)
Submitted By: ScottH on Oct 6, 2006


81° | 54°

80° | 52°

84° | 53°

88° | 56°

89° | 57°
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Clamshell Cave hosts a variety of moderate climbs, including some enjoyable moderate cracks. Most of the lines are either trad lines or require trad gear. It is easily possible to toprope most of the lines by scrambling around the right side of the crag. Most routes end at bolted anchors. The hangers on the anchors seem to come and go, a definite nuisance since options for gear at the top of the crag aren't great. Be prepared to use the anchor on a neighboring route.

Getting There 

Park 5.4 miles up Icicle creek canyon and look for a trail on the north side of the road. A well travelled and sometimes braided trail reaches the base of the crag in 10-15 minutes.

Climbing Season

Weather station 5.6 miles from here

10 Total Climbing Routes

['4 Stars',0],['3 Stars',0],['2 Stars',9],['1 Star',1],['Bomb',0]

Classic Climbing Routes in Clamshell Cave

Mountain Project's determination of the classic, most popular, highest rated climbing routes for Clamshell Cave:
Clamshell Crack   5.7 5a 15 V+ 13 MVS 4b     Trad, 1 pitch, 70'   
Noisy Oyster   5.7 5a 15 V+ 13 MVS 4b     Trad, 70'   
Keep Clam   5.8 5b 16 VI- 15 HVS 4c     Trad, 70'   
Forty-Four Fifty   5.9 5c 17 VI 17 HVS 5a     Trad, Sport, 70'   
GRTC   5.10b 6a+ 19 VII- 19 E2 5b     Sport, 1 pitch, 60'   
Browse More Rock Climbing Classics in Clamshell Cave

Featured Route For Clamshell Cave
Rock Climbing Photo: Hand crack head-on

5.8 Cube Crack 5.8- 5b 16 VI- 14 VS 4c  Washington : Central-East Cascades, Wena... : ... : Clamshell Cave
Nice, clean crack, only wish it was 4x the length. Crux is right off the deck with a tricky entrance move. Overall, the crack is hand-sized and takes feet well, although there are adequate face features for hands and feet as well. Note, old guidebook called this 5.7, but the 2003 version up-rated it to 5.8. ...[more]   Browse More Classics in Washington

Comments on Clamshell Cave Add Comment
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By ScottH
Jun 21, 2007
The anchors on this crag have hangers, but (strangely) no quicklinks for lowering. I have seen ropes get stuck when people attempt to pull them after rappelling, necessitating a hike around to the top of the crag. If anyone is so inclined, adding quicklinks to the anchors would be a nice improvement to the area.
By James Pierson
From: Bellingham, Washington
May 31, 2017
Does anyone know the name of the small crag below Clamshell Cave? You walk around the right of it then up around the back of it before making that final turn up to Clamshell.

There are a few bolted anchors at the top of the crag with some short crack lines on the left and few longer lines to the middle-right. There is a big pine tree at the base on the middle-right (yeah, I know - big pine tree at the base of the crag, that'll really narrow things down).

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