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Routes in Big Ass Slab?

Assmosis T,S 5.9 5c 17 VI 17 HVS 5a
Coloradoddity S 5.6 4c 14 V 12 S 4b
Critical Morass S 5.10c 6b 20 VII 20 E2 5b
Stout Blue Vein S 5.8+ 5b 16 VI- 15 HVS 4c
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Type: Sport, 100 ft
FA: Rick Thompson, Sam Davidson & Pat Thompson
Page Views: 6,207 total · 30/month
Shared By: Jeff Lockyer on Nov 7, 2001
Admins: Leo Paik, John McNamee, Frances Fierst, Monty, Monomaniac

You & This Route

69 Opinions

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This route follow a beautifully clean line up a blank looking slab and then cruises through a little bulge before reaching the anchors. It is a spectacular line that rates as one of my favorite slab climbs to date in Colorado. Locate this route by finding the 4 bolts on a blank looking, steep wall just uphill from the previous bolted lines (3rd bolted line from the left, facing the cliff).

Climb the delicate slab with tricky feet to the 3rd bolt and reach the 2 nice pockets before the crux, paste your feet high and reach for crimps on the slab above, very nice moves on superb rock. A funky move before getting over the bulge will keep you thinking on this route. This is splendid climbing, a must do at Jurassic Park. Have fun.


9 bolts + 2 bolt anchor.
A great route that will really "keep you on your toes" quite literally! No perceptible "crux" but fairly sustained from the 1st to 4th bolt. The headwall will also keep your interest. I'll stick with Rick's rating on this one too. However, because the anchors are set at least 20-30 ' past the headwall on 4th class terrain with a perfect ledge available on top of the headwall to call it quits, I'm going to say only 2 stars in my book. Any thoughts on the anchor placement, Rick? Also, even with a 60m rope, I just made it back down to a ledge where I could untie and walk off (totally safe). So, your belayer needs to stay on the ball as you get near the ground. May 5, 2002
This climb is great.. - balancy, sustained, beautiful exposure - you name it... but yeah - after the bulge it kinda gets dumb and 5.6ish and a little too much rope drag- still worth it though... and a 60 m rope will barely be enough to lower, but it's an ez step off from the 1st bolt if you run out of rope... all four of the climbs on this wall are very good... the 9 next to it is also quite good, and the ez climb on the arete is a gorgeous photo op with Lily Lake in the background Jun 2, 2003
Very nice route, but the anchor is currently very unsafe. The right-hand bolt is extremely loose -- it wiggles significantly even when the nut is hand-tightened as much as possible -- and the left bolt might also be loose. Be careful! (We were concerned enough to downclimb to the anchor on the route to the left before lowering.)

Given the comments from people above, perhaps if this anchor is replaced because of the bad bolt(s) it should be moved lower... May 24, 2004
Adrian Hill
Adrian Hill  
Excellent pitch, but definitely not 11a. Probably 10c/d. Apart from the anchors, all bolts are placed exactly where you want them. Following Dougald's comment, I clipped the last protection bolt then angled down to the anchor on the left, to avoid the Critical Morass anchor. The party after us went to the CM anchor, and said that it didn't seem too bad; one bolt slightly loose. Maybe someone did some repairs. Either way, a pitch not to be missed. Jun 7, 2004
Joel Larner
Fort Collins, CO
Joel Larner   Fort Collins, CO
The anchor seems OK as of 6/23/05. Not fantastic, but fine. The bolts are a touch loose, so the hangers can move a little (I'd rather they were tight), but they seemed safe to us. We used them without concern. Jun 24, 2005
logan johnson
West Copper, Co
logan johnson   West Copper, Co
As of 6-16 the bolts/anchors all seemed perfectly safe. Good route, nice beginning. Jun 16, 2006
Christina kalb
Boulder, CO
Christina kalb   Boulder, CO
Great Route!!! Balancy, with a great variety of moves. I would recommend a mantle of some sorts to get past the crux! Jun 2, 2008
Not as good looking as the Edge of Time, but much better climbing. Oct 22, 2008
Tom Kelley
Tom Kelley  
Good enough route if you're in the area but not spectaclar. Aug 24, 2011
Paul Donald Andrews
Nederland, Co.
Paul Donald Andrews   Nederland, Co.
Real good route. Had no trouble with the crux, a fun left foot high step and right hand mantle move. The headwall was interesting as I took a little time figuring out the best sequence for me. My 60 m rope made it to the ground no problem. Mar 31, 2012
David Cooper
Annapolis, MD
David Cooper   Annapolis, MD
Well equipped. Super friction. 10a, no harder. Good quality moves through lower crux section and then higher up through seam. Jun 5, 2012
I think this is at least 10c. It felt greasy in the hot sun. I didn't find any crimps above the mantel "shelf" -- just the long reach to the steeply sloping sloper, which looks better than it really is.

Installing a lower anchor would be good for the reasons mentioned above and to have an anchor that is NOT shared with the route to the right. Jul 24, 2013
Evan Gohring
Evan Gohring  
Great route! Second best at Jurassic Park, behind Andrology. Between bolts 2 and 4 are very fun, balancy moves on thin slab. Bolts are placed perfectly. Jul 4, 2015
Emil Briggs
Emil Briggs  
I led this a couple of years ago on a cool day and thought it was really soft for 10d. Led it again yesterday on a hot and sunny day and thought 10d was reasonable. Aug 1, 2015

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