The first rappel is off the second tree, from there, head down and right (towards Black Orpheus), following a ramp system to an obvious stopping point. From there, head right along a lower ramp to a notch (where the water streak starts). Drop into the notch and look under the detached block for a rap station. Take this to another ledge, which leads to the BO descent. While its not SUPER obvious, a little scouting makes this descent very manageable. However, I wouldnt recommend doing it in the dark for the first time!
The chicken lips descent. From the top of Rainbow Buttress head up and East for a few hundred yards. Go down the gully just left of the climber with the two large pines in it. Two single rope rappels (60m rope required)brings you to the top of Black Orpheus.