Diamond Lake is an easily accessible sub-alpine lake in the northern Bitterroot Mountains south of Superior. In a region full of lakes, this is one of the few that you can actually drive to – and most of the time you can make it there in a regular passenger vehicle. The lake, which is a few hundred yards long, is wedged into a narrow valley just shy of the Montana-Idaho state line. It’s easy to toss a kayak or canoe into the bone-chilling waters, but the real reason to come here is to take the 1-mile hike to Cliff Lake – a truly spectacular alpine lake guarded on three sides by soaring cliffs. The trail to Cliff passed under avalanche chutes and rarely melts out before July 1; the easy road access makes this a prime and highly scenic summer skiing spot.