Pass the Sputnik Boulder like you are going up to the Lower Satellites. Instead of going left up the trail next to the huge wall known as The Wave, go up the right fork of the trail to the base of The Second Flatiron.
Where the trail meets the base of the Second Flatiron, a cube-like boulder reminiscent of a Borg Cube on Star Trek is on your left.
The Collective ascends the vertical north face from a start on top of the large boulder on the right. Tiptoe left across the boulder to a large sloper and go straight up and over on edges."