Upper Two Medicine Lake

Overview

Upper Two Medicine Lake sits in a dramatic cirque at the head of the Two Medicine Valley, ringed by Lone Walker Mountain, Mount Helen, Mount Rockwell, and the eye‑catching Pumpelly Pillar. It’s the wilder, quieter sibling to the main Two Medicine Lake—clear water, big walls, and a backcountry feel without much development.

Getting There

You’ll reach the lake by trail—no roads here. Hike from the Two Medicine area (the full out‑and‑back is roughly 11 miles via the South Shore route and is considered moderate), or take the scenic boat shuttle across Two Medicine Lake to lop 5–7 miles off the round trip before continuing on foot. The approach winds through forest and along Two Medicine Creek with a short spur to Twin Falls.

What You’ll See

Expect lush forest, ferny creek crossings, and then the payoff: a clear alpine lake backed by a glacial headwall and steep cliffs. Calm days bring mirror‑like reflections. Along the shore you may find small rocky beaches and driftwood piles—great perches for a snack break.

Wildlife

Moose are regularly spotted nosing around the shoreline. This is also classic bear country. Carry bear spray, make noise, and give wildlife a wide berth.

Camping

There’s a designated backcountry campground near the lake—simple and quiet—so you can linger for sunset and sunrise without rushing the hike. Expect a primitive setup and use the provided bear box for food storage.

Best Time to Visit

• Summer after snowmelt is prime; shoulder months can be lovely but variable.
• Start early for quieter trails and better chances at moose along the shore.
• The hike is not recommended in winter; even in summer, cold snaps and fresh snow can happen.
• If you plan to ride the boat, align your start/turnaround with its schedule.

Know Before You Go

• This is backcountry: no services, unreliable or nonexistent cell coverage, and rapidly changing weather. Pack layers, rain protection, plenty of water, and a map you can use offline.
• Bugs ramp up near water in peak summer—bring repellent.
• Add the Twin Falls spur on the way—it’s a short, worthwhile detour.

Is It Worth It?

If you want big-mountain scenery without the crowds of the busier districts, yes. The boat-plus-hike option keeps it accessible, and the moose factor is a delightful wildcard.