Beginning of Saw Tooth
This is the beginning of the descent down the saw tooth. Make sure you REALLY want to do this, as once you descend, there is no easy way back. The saw tooth is a class 3 scramble, meaning that you will be using your hands in places to climb and navigate around rocks.
We had the fortune to speak with a ranger on our way across and he gave us some good advice which I will pass along. Stay as high as possible when crossing. Yes, it will take longer. However, if you don't go down, you don't have to come back up. This is important, because on your way out of the saw tooth you will do some heavy climbing. How much climbing depends on how far down you chose to go.