take west cirque, then cut over to the ridge on your left and it should be right there.
I'm not really sure where it is exactly since i just kinda followed a friend in and it was a while ago so I can't remember exactly. But the area where we went in was where two trails kinda formed a V...
actually you know what, disregard what I just said. I know where we were skiing and it may/may not have been the christmas trees. If you look at the trail map it's the "out of bounds" area that is right off to skiers right of peak to creek (whistler mtn). Kinda in between highway 86 and peak to creek. We took peak to creek and just went in where there were two out of place looking "christmas tree" type pine trees.
It's not roped off or anything, so I think that's why we ended up skiing it. We didn't really know it was out of bounds, so we just kinda did it ha. I'm not sure why its "out of bounds" since it's completely surrounded by the resort, and I'm not sure if it is or isn't dangerous so do it at your own risk. It was pretty tame when we skied it though, mostly filled with mini pillow lines.