Washington’s loneliest waterfall plunges 200 feet into a canyon most people don’t know exists

It’s the state’s only official waterfall

You drive through miles of golden, treeless plains in southeastern Washington, and nothing about the landscape tells you what’s coming.

Then the ground drops away, and a 200-foot waterfall plunges into a basalt canyon so deep you have to step to the rim just to see the bottom.

Palouse Falls is one of the last active waterfalls along the ancient Ice Age flood path, and the story of how it got here starts with a wall of ice in Montana.

An ice dam broke and billions of gallons rushed through

More than 13,000 years ago, a massive ice dam blocked the Clark Fork River in present-day Montana, backing up water into Glacial Lake Missoula.

When that dam gave way, trillions of gallons tore across eastern Washington at speeds up to 65 mph. It happened over 40 times across about 2,000 years, carving canyons and basalt cliffs into the earth.

Before those floods, the Palouse River followed a gentler path. The floodwaters forced it into the course you see today.

One geologist fought decades to prove it

The falls sit inside the Channeled Scablands, a landscape so unusual that geologist J Harlen Bretz spent the early 1900s arguing that catastrophic floods, not slow erosion, shaped it. The scientific community pushed back for decades.

He was right. In 2009, the Ice Age Floods National Geologic Trail became the first national geologic trail in the country, stretching across Montana, Idaho, Washington and Oregon.

Palouse Falls is part of that trail, and when you stand at the rim, you can see why.

Elementary school kids made it the state waterfall

A group of third through sixth graders at Washtucna Elementary School decided Palouse Falls deserved a title. They researched the waterfall, wrote letters and traveled to Olympia to testify before legislators.

The House passed the bill unanimously on Feb. 12, 2014, and the Senate approved it 46-3. Governor Jay Inslee drove out to the falls on March 18, 2014, and signed it right there at the canyon rim.

Washington became the first state to designate an official state waterfall.

Three viewpoints give you three different falls

A short set of steps from the main parking area takes you to the lower viewpoint, where you get a head-on look at the cascade.

A paved interpretive path leads to a second viewpoint with panels explaining the geology and history of the canyon.

The Fryxell Overlook sits highest and opens up a panoramic view of the falls and the Palouse River Canyon winding into the distance. An ADA-accessible observation shelter with historical displays sits near all three.

Dark basalt columns tower over the canyon walls

The canyon walls expose towering columns of basalt, formed millions of years ago when ancient lava flows cooled and cracked into geometric shapes.

These formations belong to the Columbia River Basalt Group, one of the largest basalt formations on Earth.

The rock layers go back far before the Ice Age floods, to a time when massive eruptions buried the region in lava.

Above the dark columns, golden grassland stretches to the horizon, and the contrast between the two hits you the moment you look down.

The Palouse people called it Aput Aput

The Palouse people, for whom the river and falls are named, called this place Aput Aput, meaning “falling water.” The falls served as a gathering place with deep cultural importance.

A tribal story tells of four giant brothers who chased a creature called Big Beaver through the canyon. Each time they speared it, Big Beaver clawed at the earth, gouging out the canyon walls and creating the waterfall.

Look at the jagged basalt, and you can see why the story endures.

Catch the Milky Way arching over the falls

Sunset fills the canyon with golden light and warms the basalt walls, making it the best time to point a camera at the falls.

Astrophotographers travel from across the country to capture the Milky Way stretched over the canyon on clear nights.

Spring runoff turns the falls into a thundering column of white water, and winter coats the rock in ice.

In spring, lupine and other wildflowers add color to the surrounding hillsides and give the foreground something extra.

Yellow-bellied marmots own the basalt rocks

The park’s most recognized residents are yellow-bellied marmots, and you’ll spot them sunning on the basalt near the viewpoints if you visit on a warm day.

Ravens ride the canyon’s updrafts, and rock doves gather near the top of the falls. Red-tailed hawks patrol the rim, hunting along the edges.

In spring, white-throated swifts dart along the cliff faces. Rattlesnakes also live in the area, so stick to marked paths and watch where you step.

The stars here earn a Bortle Class 2 rating

The park sits so far from city lights that the sky earns a Bortle Class 2 rating for darkness, which means you can see things overhead that most Americans never will.

On clear nights, the Milky Way stretches wide above the canyon while the waterfall roars below. Late spring through early fall gives you the driest weather and clearest skies.

The primitive campground lets you catch sunset on the falls, then the stars, then sunrise light on the basalt all in one stay.

Flat grassland drops into a 377-foot canyon

The drive to the park passes through the Channeled Scablands, a terrain of buttes, coulees and rocky outcroppings carved by those ancient floods. For miles, everything looks flat and dry.

Then the canyon opens up, 377 feet deep, with layers of ancient basalt in the walls. Interpretive signs around the park explain the scale of what happened here.

The closest community is Washtucna, a tiny town often called the Gateway to Palouse Falls, just a few miles north.

Bring water and download your maps early

Every trail leading into the canyon and down to the base of the falls is permanently closed for safety. The basalt cliffs are steep, and the ground beyond the marked viewpoints is loose and unstable.

You won’t have cell service in most of the park, and the nearest hospital is about 40 miles away. Bring plenty of water because the area gets extremely hot with almost no shade.

Parking fills up fast on weekends and holidays, and trailers and RVs are not allowed.

Drive in from Spokane or the Tri-Cities

The park sits about 90 minutes from both Spokane and the Tri-Cities area in southeastern Washington. The last stretch of the drive turns to gravel before you reach the entrance.

You’ll need a Washington Discover Pass to park, and you can buy one at an automated pay station on site.

Summer hours run from 6:30 a.m. to dusk, and winter hours start at 8 a.m. Download your maps and directions before you lose signal on the approach, because GPS gets unreliable out here.

Explore Palouse Falls State Park in Washington

If you want to see the falls for yourself, head to Palouse Falls State Park off Highway 261, about seven miles south of Washtucna in Franklin County.

While you’re in the area, Lyons Ferry State Park sits about eight miles south and gives you swimming, picnicking and boat access where the Palouse and Snake Rivers meet.

For a completely different view of the region, Steptoe Butte State Park is about 90 minutes northeast, where a 3,612-foot summit opens up 360-degree views of rolling Palouse farmland.

This article was created with AI assistance and human editing.

Read more from this brand:

• Gig Harbor, Washington sits 14 miles from Tacoma and feels like a different century
• Washington’s quietest island has no stoplights and everyone is real nice
• Washington’s strangest roadside stop is a waterfall with no water and a wild backstory