the two dirty cracks, most north two of Another Buttress, the one on the right (north) is Gollium. Follow the crack to the ledge (very chossy, watch for loose rock) then climb the last 5m or so of crack (very wide crack), its all in the feet work, get them as high as you can.
This route is actually called Gollum and it rated a 5.6 according to the Skaha climbing guide that I have.
I found the route to be ok for beginner trad leads like myself. It takes big pieces. Indeed, it is a bit loose towards the top, but pro placements are good IMO. Required a bit of foot work on bottom half of the route.