Imagine the steepest hill in San Francisco. Now imagine that stretching on for about 10 city blocks, with only a tiny bit of leveling off near the end. That's what this road (near Carran) was like.
I made it up about halfway, and finally had to give up and walk the rest. I felt that perhaps had it been earlier in the week I might have made it all the way; however one of the guides from my tour company told me that she also had to walk this hill. The downhill side of it was also so steep I had to brake substantially the entire way down.