I took a double from down near the lodge then skied to the bottom of another lift from there. Maybe a triple. It had a lodge at the top. The I skied, or more like traversed from that (hung a left off the chair) along a cat track to some funky rope tow deal. I think it was the kind you sit on if I remember correctly. Then off of that and followed the trail until the end. In front of us was a medium pitch valley with birches on either side of a groomed trail and hardly any tracks in the pow off the groomers. And there was a lot of terrain on either side of that trail I'm telling you!
Sounds like you skied in Cobabe Canyon (named after the original owner Alvin Cobabe). To get there from the upper lodge/parking lot. You would have: (1) skied down to the Timberline Triple, (2) taken that lift up, (3) skied down to the Hidden Lake Quad, (3) taken that lift up, (4) traversed across to the Sunrise Poma, (5) taken that up, and (6) traversed out to Cobabe Canyon.
To loop that run from the bottom of the Cobabe Canyon, you could: (1) take the Paradise Quad up, (2) ski down a run that ends up at the Hidden Lake Quad, (3) taken that lift up, (4) traversed across to the Sunrise Poma, (5) taken that up, and (6) traversed out to Cobabe Canyon. That is part of the reason it stays untracked. The other reasons are that it is a very big area and a lot of it is not particularly steep. I haven't skied it a lot but I remember being there one day when I found a really nice line into the Canyon off of Sanctuary that was largely untouched. The long round trip was torture to get back into it but it was a sweet 25 or 30 turns.
In fairness, runs like that are best used to get somewhere else. For example, after a morning hitting the Paradise Quad, eat lunch at the top of Hidden Lake. From there it is just the traverse and Sunrise Poma back to Paradise or drop off the backside and catch the bus for a drop off at the Sundown base where you can take that lift up and catch a snowcat ride. The backside/snowcat/pardise circuit is a great one when there are not too many people trying to ride the bus and snowcat. Like you said, planes, trains and automobiles. It's funny you came up with that reference because I hear that a lot around here.