Originally intending to tag Pinnacle, I headed up too soon when the Highline trail disappeared in a meadow. I tagged the first two points on the ridge, at least one of which I believe is "Terrace". Trip report.
I went a couple of times from right before the gate leading to the hot springs. Went right up the little valley until reaching the ridge that leads right up to the summit ridge. Another spectacular Gros Ventre viewpoint. I had heard the name Terrace Mountain from a GV regular who has spent a lot of time in the range with many first ski descents.