Best natural monuments in Grant County showcase a landscape dramatically shaped by ancient floods, volcanic activity, and glacial processes. This region in Washington features significant geological formations that provide insight into the Pacific Northwest's natural history. The area is characterized by massive ancient riverbeds, basalt columns, and unique rock formations. These sites offer diverse opportunities for exploring the powerful natural forces that shaped the terrain.
Last updated: May 11, 2026
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Popular around Grant County
There is awful path to waterfall from both sides: around the lake the last 100 meters contains big rocks and no path at all. And if you're wish to climb up the hill or climb down - that's what really dangerous!
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The first part is the worst part. once you're up on the rock, it's pretty easy going. Watch out for unexpected wind gusts and stay away from the edge.
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This is a two-part waterfall, featuring an initial 25-foot drop followed by a graceful cascade at the basin. Ultimately, this waterfall flows into Ancient Lake, making it a beautiful stopping point.
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As I am not a geologist, I cannot give precise information about the geological layers. but it looks nice. We didn't climb in for safety reasons.
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Expect steep loose scramble at start of ascent but pretty easy once on the plateau. Many wildflowers in early May
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The Feathers are a stunning volcanic rock formation shaped like numerous huge columns. It is a popular spot for rock climbing. There is also a dispersed campground with restrooms at the base.
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To get to this viewpoint, you have to climb up a steep rugged path. But once you are up here, you will be treated with a beautiful panoramic view of Banks Lake and the Grand Coulee.
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At the northern tip of Steamboat Rock, you enjoy a fantastic view over Banks Lake with stunning rock formations like Eagle Rock and Castle Rock to the east and Barker Butte and Cache Butte to the west. A perfect spot to take a break!
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Grant County is home to several remarkable natural monuments. The Grand Coulee is a massive ancient riverbed, a designated National Natural Landmark, featuring sites like Dry Falls. Dry Falls itself is the remnant of what was once the largest waterfall on Earth. Other significant sites include the Drumheller Channels, known for their intricate network of coulees and buttes, and Steamboat Rock Summit, a prominent monolith offering panoramic views. Don't miss The Feathers, striking volcanic rock formations, and Frenchman Coulee with its basalt columns.
Yes, Grant County offers diverse hiking opportunities. You can hike to the summit of Steamboat Rock for stunning views, explore the unique landscape of the Drumheller Channels, or discover the basalt columns at Frenchman Coulee. For more options, check out the Hiking in Grant County guide, which includes routes like the Steamboat Rock Trail and Ancient Lakes Trail.
For rock climbing enthusiasts, The Feathers are a popular destination, known for their unique volcanic rock columns. Frenchman Coulee, near Quincy, also offers multiple climbing routes amidst its fascinating basalt formations.
The natural monuments in Grant County provide habitats for various wildlife. Northrup Canyon, with its rugged volcanic walls and native pine forest, is home to black bears. The Drumheller Channels, part of the Columbia National Wildlife Refuge, offer unique opportunities for wildlife observation, including various bird species and other animals adapted to the scablands environment.
Many natural monuments in Grant County can be enjoyed by families. The sheer scale of Dry Falls is impressive for all ages, with scenic overlooks and interpretive signs. Potholes Reservoir offers water sports and camping. For hiking, there are easy hikes available, such as the Steamboat Rock Trail, which provides accessible paths for younger explorers once past the initial scramble.
The best time to visit Grant County's natural monuments is generally during spring (April-May) and fall (September-October) when temperatures are milder and wildflowers are in bloom. Early May, for instance, is noted for many wildflowers on Steamboat Rock Summit. Summer can be very hot and exposed, so bring plenty of water and sun protection if visiting then. Winter visits are possible but some areas might have limited access or require specific gear.
Yes, Grant County features impressive waterfall remnants and active falls. Dry Falls is the most prominent, though no longer flowing, it's a geological marvel. For active waterfalls, you can explore Ancient Lake Falls. There are also several waterfall hikes in the region, including loops to Ancient Lake Falls.
For breathtaking panoramic views, hike to Steamboat Rock Summit, which offers 360-degree vistas of the Channeled Scablands and Banks Lake. Another excellent spot is the Viewpoint overlooking Banks Lake and the Grand Coulee, accessible via a steep path. Frenchman Coulee also provides stunning views of the Columbia River.
Grant County is a geological wonderland. You can observe the massive ancient riverbed of the Grand Coulee, the immense dry cliffs of Dry Falls, and the intricate network of coulees and buttes at the Drumheller Channels, all shaped by colossal Ice Age floods. The region also features striking basalt columns at Frenchman Coulee and The Feathers, showcasing ancient volcanic activity. Potholes Reservoir is known for its unique 'pothole' formations resulting from flood erosion.
Yes, The Feathers offers a dispersed campground with restrooms at its base, making it a convenient spot for climbers and visitors. Potholes Reservoir is also a popular location for campers, offering both serenity and adventure near its unique geological formations.
Given the often exposed and rugged terrain, it's essential to bring plenty of water, especially during warmer months, as you can be exposed to sunlight for extended periods. Sun protection, including sunscreen and a hat, is highly recommended. Sturdy hiking shoes are advisable for trails, and layers of clothing are useful for changing weather conditions. For specific sites like Steamboat Rock Summit, be prepared for steep, loose scrambles and potential wind gusts.


Extend your search for the best caves by checking out these guides of the top ones in Grant County: