As of 10/6/13 at 528pm, the CO Hwy 119 through Boulder Canyon has reopened. The most recent information is that OSMP and all the terrain north of CO 119 is closed.
The September floods released significant rockfall, and the Canyon is closed at the entrance out of Boulder. Certain areas may be accessible from Nederland, but it is unclear when the road will be reopened and whether pullouts for parking will be damaged.
This information is a public crowdsourcing effort between the Access Fund,
and Mountain Project. You should confirm closures, restrictions, and/or related dates.
As far as climbing is concerned, this one should stay lost! Rossiter's guide book calls it a 5.7 and two to three pitches. This is a single pitch (60m rope) 5.4 at best, mostly 5.2-3. The downclimb through the gully was more exciting! Granted, it's a beautiful slab of granite, seemingly lost in the Canyon, but does not come as advertised. I'm never one to feel badly about a climb, it beats damn near anything else, but this one bordered on a waste. The so called "crux" is one step around a tiny tree towards the top. Enjoy the many other wonderful climbs in the canyon!
There is a crag between Lost Flatiron and Witches Tower with at least 1 route on it, a 5.8 or 5.9 trad obscure line.
Drive 6.6 miles up Boulder Canyon, and park at the large pullout on the south side of the road underneath Cob Rock. It is visible from the parking lot. Cross the stream (easiest is at the east end of the pullout), and then hike about 300 yards up and right from the trail on the west side of Cob Rock. Exit from the top is via a steep gully on the west side.
2 pitches. Start 6 feet from left edge (ramp) of the flatiron's face....head straight up beautiful slab with decent cracks here and there for pro. There is a nice wide crack for fun about halfway up. Can belay at any of numerous ledges after half way or more. Crux is going around the LEFT side of a small tree (right on edge, much exposure) 50 feet from the top. Continue on steep slab to summit. It's not climbed often so a nice moderate isolated route. ...[more]Browse More Classics in CO
I regret not having read climbingboulder's description of this area before bushwhacking my way a couple hundred yards up a 45 degree slope for an uneventful 5.4 climb. The only interesting aspects of this climb were the runouts and an excellent view of Cob Rock.