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Skamania County

Top 20 Natural Monuments in Skamania County

Best natural monuments in Skamania County are located in the southwestern part of Washington State, an area characterized by its diverse geological features and extensive national forests. Roughly 80% of the county's land is covered by national forests, offering a variety of natural attractions. The region is known for its volcanic landscapes, river gorges, and unique cave systems. These natural monuments provide opportunities to observe ecological recovery and geological formations.

Best natural monuments in Skamania County

  • The most popular natural…

Last updated: May 11, 2026

Johnston Ridge Observatory

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The observatory tells the story of Mount St. Helens and the impact of its 1980 eruption - on the land as well as on animal and human life.

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Dog Mountain summit

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Epic views of the Columbia Gorge and Mt. Hood on clear days. If you're going to put in the work, you should enjoy the summit!

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Silver Star Mountain

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Silver Star Mountain is an extinct volcano. It is named this way for the five prominent ridges that link to the summit in the shape of a star.

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The Ape Cave is the third longest lava tube in North America. This is the main entrance for the impressive Ape Cave. The cave consists of a massive lava tube …

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Mount St. Helens Summit

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Most people will know the name of Mount St. Helens due to the massive eruption that happened in May 1980. In that event, the top of the mountain was blasted …

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Ape Canyon Trail

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Ape Canyon Trail belongs on your bucket list. This ride will blow your mind. This is how riding on the moon must feel like. A very unique place to ride your bike. Don't miss out.

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Treeline and restricted area

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On your way up to the summit of Mount Saint Helens, this is the last spot that has at least some shade. So take a short break, before you head …

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Hamilton Mountain summit

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Don't wait until the summit to enjoy the views. You will find some of the best views on Hamilton Mountain just below the summit and on the saddle in the north.

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Lower Lewis River Falls

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At 43 feet high and 200 feet across, the lower Lewis River Falls are breathtaking. What a delightful spot!

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Great view , shaded, with toilet, Kindda Kids Friendly, not everywhere fences, not wheelchair accessible..

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Arjun
March 1, 2025, Ape Canyon Trail

Amazing trail. First bit out of the parking lot is the techiest. After that, it is one of the best rides you can do in Washington. Unbelievable views and nature

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After two months of volcanic activity and shaken by an earthquake measuring 5.1 on the Richter scale, the north face of this tall symmetrical volcano collapsed in a massive rock debris avalanche. In moments, this slab of rock and ice slammed into Spirit Lake, crossed a 1,300-foot ridge and roared 14 miles down the Toutle River. The avalanche quickly released pressurized gases inside the volcano. A massive lateral explosion ripped through the avalanche and developed into a turbulent, rock-filled wind that swept over ridges and toppled trees. Nearly 150 square miles of forest were blown away or left dead and standing. At the same time, a mushroom-shaped column of ash rose thousands of feet into the sky and drifted against the wind, turning day into night as dark, gray ash fell across eastern Washington and beyond. Wet, cement-like mud of rock and silt scoured all sides of the volcano. Searing currents of pumice poured from the crater. The eruption lasted 9 hours, but Mount St. Helens and the surrounding landscape changed dramatically in a matter of moments.

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This Juice is worth the Squeeeeze!

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Great view , shaded, with toilet, Kindda Kids Friendly, not everywhere fences, not wheelchair accessible..

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The visitor center is currently closed (6.2023) due to a large landslide, and it will be closed for some time as they repair the road. The closest access point is the Mt St Helens Science and Learning Center, located on Coldwater Lake. There is a trail from the Learning Center that can link up to the Boundary Trail and other popular Mt St Helens trails, although it does add considerable distance.

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On your way up to the summit of Mount Saint Helens, this is the last spot that has at least some shade. So take a short break, before you head out into the sun. This is also the boundary of the restricted area. You can hike up to this point without a permit, but to continue, you have to obtain a permit at https://www.recreation.gov/.

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The Ape Cave is the third longest lava tube in North America. This is the main entrance for the impressive Ape Cave. The cave consists of a massive lava tube that you can explore on your own. Before you do, though, you have to book an inexpensive ticket for a certain time slot from May through October on https://www.recreation.gov/timed-entry/10086990 – that is to save the cave from the masses and ensure that you can experience this unique formation without being rushed. Bring at least two sources of light (in case one fails), it is pitch black in the 2.5 mile tunnel. Also bring some warm layers as it is just 42 degrees cool even in summer.

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Eugene
January 5, 2023, Ape Canyon Trail

This trail skirts around the east side of St. Helens and a windy ridge but not wide enough to be scary. It has epic views with some occasionally hike-a-bike!

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Frequently Asked Questions

What are some of the most popular natural monuments in Skamania County?

Among the most popular natural monuments in Skamania County is Johnston Ridge Observatory, which offers insights into Mount St. Helens and its 1980 eruption. Visitors also highly appreciate Silver Star Mountain, an extinct volcano known for its star-shaped ridges, and Dog Mountain summit, which provides epic views of the Columbia Gorge and Mount Hood.

Are there family-friendly natural monuments in Skamania County?

Yes, several natural monuments in Skamania County are suitable for families. The Ape Cave Interpretive Site offers a unique underground exploration experience that can be exciting for all ages. Additionally, the Trail of the Two Forests and trails within Beacon Rock State Park are generally considered family-friendly, offering accessible paths and scenic views.

What unique geological features can I explore in Skamania County?

Skamania County is rich in diverse geological features. You can explore the dramatic volcanic landscape around Mount St. Helens, including the fascinating lava tube of Ape Cave. The Columbia River Gorge offers towering cliffs and numerous waterfalls, while Lower Lewis River Falls provides a beautiful example of the region's riverine geology.

What is the historical significance of Mount St. Helens?

Mount St. Helens is historically significant due to its catastrophic eruption in May 1980, which dramatically reshaped the landscape and provided a unique environment for scientific study. The Johnston Ridge Observatory is dedicated to telling the story of this event and its impact on the land, wildlife, and human life, named after volcanologist David A. Johnston who died during the eruption.

What outdoor activities can I do near these natural monuments?

Skamania County offers a wide range of outdoor activities. You can find numerous hiking opportunities, from easy strolls to challenging climbs, including trails like the Dog Mountain Trail and the Worm Flows Climbing Route for Mount St. Helens. There are also options for gravel biking, with routes such as the Gobblers Knob loop. For more details on routes, you can explore guides for hiking and gravel biking in Skamania County.

What should I know before visiting Ape Cave?

When visiting Ape Cave, it's essential to book an inexpensive ticket for a specific time slot in advance, especially from May through October, via recreation.gov. The cave maintains a cool 42 degrees Fahrenheit even in summer, so dress warmly. Also, bring at least two reliable sources of light, as it is pitch black inside the 2.5-mile lava tube.

Where can I find the best panoramic views of the Columbia Gorge?

For breathtaking panoramic views of the Columbia Gorge, consider hiking to the Dog Mountain summit or Hamilton Mountain summit. Both offer incredible vistas, often including Mount Hood on clear days. The summit of Beacon Rock in Beacon Rock State Park also provides stunning views of the river and gorge.

What is the best time to visit the natural monuments in Skamania County?

The best time to visit Skamania County's natural monuments generally depends on the activity. Summer and early fall offer ideal conditions for hiking and exploring the volcanic landscapes and gorge trails. However, for unique experiences like Ape Cave, which maintains a cool 42 degrees Fahrenheit year-round, summer can be a refreshing time to visit. Some areas, like Mount St. Helens, may have seasonal closures or limited access during winter due to snow.

Are there accessible natural monuments in Skamania County for visitors with limited mobility?

While many trails in Skamania County involve rugged terrain, some areas offer more accessible options. The Johnston Ridge Observatory at Mount St. Helens provides paved paths and facilities designed for accessibility, allowing visitors to experience the volcanic landscape. It's always recommended to check specific monument websites for the most up-to-date accessibility information.

Can I observe wildlife at the natural monuments in Skamania County?

Yes, Skamania County's natural monuments, particularly within the vast Gifford Pinchot National Forest, offer excellent opportunities for wildlife observation. The diverse ecosystems, from lush forests to volcanic plains, support a variety of species. Keep an eye out for deer, elk, various bird species, and smaller mammals while exploring the trails.

Are there any scenic drives to experience the natural beauty of Skamania County?

Yes, Skamania County is home to several scenic drives that showcase its natural beauty. The Columbia River Gorge National Scenic Area features routes like the Lewis and Clark Trail Scenic Byway, offering breathtaking views and access to natural landmarks. For more information on scenic drives in the area, you can visit visitstevensonwa.com.

What kind of trails can I find in Beacon Rock State Park?

Beacon Rock State Park offers over 9.5 miles of hiking trails. The most notable is the switchback trail that leads to the summit of Beacon Rock itself, providing incredible views of the Columbia River and the Gorge. The park also features trails suitable for various skill levels, allowing visitors to explore its extensive freshwater shoreline and forested areas.

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