This is The Sawtooth ridge that traverses from Bierstadt to Evans. It is rated as a Class 3 scramble, but it wasn't too tough. The route was well marked the entire way and the exposure was minimal (despite how it looks in the picture). It did take me more than 2 hours to traverse from the top of Bierstadt to the other side of The Sawtooth. It was some of the more intersting hiking I have done this year.