Looking East over the shoulder of Mt. Sentinel from the level of the “M” itself. Click the thumbnail at right for a zoomed view of I-90 and the canyon leading into Missoula as seen from the same point.

The “M” Trail continues up to the top of Mt. Sentinel from the “M” itself; the hike gets progressively more challenging above the “M” to the point where near the top it's very slow going. The trail also gives you lots of false summits so you'll think you've reached the top at least half a dozen times before you do. I didn't actually make it to the top so I'll have to try again soon...