Twin Falls

Overview

Twin Falls is a quick, family‑friendly outing in the Two Medicine area to a pretty double cascade tumbling off the slopes of Pumpelly Pillar. The most popular version is the boat‑assisted walk: roughly 2.0 miles total, out‑and‑back, with about 100–140 feet of gain, typically 40–60 minutes of moving time. Prefer to walk the whole way? Start from the North Shore trailhead near the Two Medicine Campground for a longer, easy outing of about 7.1 miles round‑trip and ~518 feet of gain.

What you’ll see

From the West End boat dock, the trail is mostly flat and shaded, with short boardwalks and footbridges over clear creeks. You’ll pass through lush patches of ferns and huckleberries and get classic Two Medicine views of peaks like Rising Wolf, Sinopah, Painted Tepee, Grizzly Mountain, and more. Keep an eye out for the glacially carved, cone‑shaped Pumpelly Pillar. Twin Falls itself splits into two ribbons, separated by about 50 feet before rejoining near the trail—most impressive in early summer flow.

Geology in plain sight

Two Medicine’s broad U‑shaped valley and the hanging valleys feeding falls like this were carved by Pleistocene glaciers. The colorful red and green layers you see in the cliffs and talus are ancient Belt Supergroup sedimentary rocks. The whole skyline owes its drama to the Lewis Overthrust, which shoved billion‑year‑old layers over much younger rock—one of the park’s signature geologic stories.

Getting there and route picks

• Shortest/most fun: Ride the lake boat to the West End dock, then follow the South Shore Trail to the short spur for Twin Falls and back. Boats are seasonal and popular—secure tickets early.
• On foot, no boat: Start from the North Shore/Dawson Pass area near the campground for the ~7.1‑mile round‑trip to the falls. It’s still easy, just longer.

Parking is at the main Two Medicine area by the boat dock or near the campground trailhead; restrooms are nearby.

Tips, crowds, and on‑trail quirks

• Near the west end of the lake there’s a choice between a “horse ford” shortcut and a longer bridge route. Stick with the bridges—early‑season fords can be frigid and thigh‑deep.
• Expect brief crowd surges at the falls when boats unload. Go early or later in the afternoon to thin it out.
• Cell service is unreliable; download maps ahead of time.

Best time to hike

Early summer is prime for waterfall volume and wildflower color, but expect colder creeks and a chance of afternoon thunderstorms—start early. Late summer into fall brings lower flows (the falls can feel modest in very dry years) but steadier weather and fewer bugs, with crisp morning light on the peaks.

If you have extra time

Want a bigger waterfall or a longer outing from the same area? Rockwell Falls is a taller, more dramatic cascade. For a short add‑on and a view, Aster Falls/Aster Park is a great family detour. Driving in or out, Running Eagle (Trick) Falls is a must‑do quick stop.

Safety

This is bear country—make noise in brushy sections and carry bear spray. Give moose a wide berth along creeks and lakeshores. Mountain weather changes fast; pack layers and rain protection.