Top 15 Natural Monuments in Rio Grande National Forest
Best natural monuments in Rio Grande National Forest showcase a diverse landscape shaped by volcanic activity and erosion. This vast expanse in southwestern Colorado features significant geological formations and cultural sites. The region offers a range of natural features, from volcanic arches to the headwaters of a major river. These natural monuments in Rio Grande National Forest provide opportunities to explore unique terrain and historical significance.
Best natural monuments in Rio Grande National Forest
- The most popular natural monuments is Rio Grande Headwaters, a river that marks the beginning of the fourth-longest river in the United States. This humble stream at the base of Canby Mountain grows to stretch over 1,800 miles.
- Another must-see spot is Natural Arch β°οΈ, a natural monument formed within a volcanic dike. This 40-foot-tall, 30-foot-wide arch is a sacred site for Jicarilla Apache and Ute tribes and offers views across the San Luis Valley.
- Visitors also love Highest Point of the Colorado Trail, a summit reaching 13,271 feet. This location provides panoramic views and marks a significant achievement for those traversing the Colorado Trail.
- Rio Grande National Forest is known for its natural arches, river headwaters, and high mountain summits. Visitors can explore a variety of natural monuments, including volcanic formations and significant hydrological features.
- The natural monuments in Rio Grande National Forest are appreciated by the komoot community. With 1 upvote and 6 photos, these locations offer compelling experiences for outdoor enthusiasts.
Last updated: July 8, 2026
Natural Arch β°οΈ
Highlight β’ Natural Monument
Lava from the Summer Coon volcanic complex intruded into cracks in the surrounding alluvial and volcanic deposits about 30 million years ago. Parts of the magma cooled at different rates and separated from the rest of the wall, and when the surrounding deposits eroded away, the inner part of the arch collapsed, leaving a hole in the dike. The end result was a 40-foot-tall, 30-foot-wide arch.
From the end of La Ventana Road, a steep scramble leads to the arch, rewarded with views across the San Luis Valley to the Sangre de Cristo mountains and the Great Sand Dunes National Park. The arch itself is difficult to see from any direction except directly in front of or behind it, quite clearly from the parking at the end of La Ventana Road. If you want to scramble up to the rock wall, bikes can be left at the end of the road, ideally locked in an elevated position, and can be seen when looking back while hiking up.
The arch is a sacred site for the Jicarilla Apache and Ute tribes and is still used for ceremonies.
The arch is about 11 miles northwest of Del Norte, Colorado, on Forest Service Road A23, a.k.a. La Ventana Road. The road is rough rocky gravel, but doable on most bikes. Signs in the area point to the arch. When hiking to the arch, wear sturdy shoes with good grip. Caution is warranted when climbing to the arch and when descending. Loose rock requires caution and stable footing.
To get to the Arch from Monte Vista β head north out of Monte Vista on Highway 285 for 18 miles to County Road G. Turn left and go west to the βYβ just past the La Garita Store. Take the dirt road south and follow the signs to the Natural Arch.
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Highest Point of the Colorado Trail
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Rio Grande Headwaters
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Maggie Gulch Overlook
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Blanca Peak
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La Garita (or La Ventana) Natural Arch is different from many of the natural rock arches scattered around Colorado. Rather than being formed from uplifted sandstone as most arches are, the Ventana Arch formed within a magma intrusion called a volcanic dike. Lava from the Summer Coon volcanic complex intruded into cracks in the surrounding alluvial and volcanic deposits about 30 million years ago. Parts of the magma cooled at different rates and separated from the rest of the wall, and when the surrounding deposits eroded away, the inner part of the arch collapsed, leaving a hole in the dike. The end result was a 40-foot-tall, 30-foot-wide arch. From the end of La Ventana Road, a steep scramble leads to the arch, rewarded with views across the San Luis Valley to the Sangre de Cristo mountains and the Great Sand Dunes National Park. The arch itself is difficult to see from any direction except directly in front of or behind it, quite clearly from the parking at the end of La Ventana Road. If you want to scramble up to the rock wall, bikes can be left at the end of the road, ideally locked in an elevated position, and can be seen when looking back while hiking up. The arch is a sacred site for the Jicarilla Apache and Ute tribes and is still used for ceremonies. The arch is about 11 miles northwest of Del Norte, Colorado, on Forest Service Road A23, a.k.a. La Ventana Road. The road is rough rocky gravel, but doable on most bikes. Signs in the area point to the arch. When hiking to the arch, wear sturdy shoes with good grip. Caution is warranted when climbing to the arch and when descending. Loose rock requires caution and stable footing. To get to the Arch from Monte Vista β head north out of Monte Vista on Highway 285 for 18 miles to County Road G. Turn left and go west to the βYβ just past the La Garita Store. Take the dirt road south and follow the signs to the Natural Arch.
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This humble stream is the headwaters of the Rio Grande. Here, at the base of Canby Mountain, this stream will grow and transform into the 4th longest river in the United States, stretching 1,896 miles bordering Texas and Mexico till it reaches its endpoint in the Gulf.
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At 13,271 feet you reach the official highest point of the Colorado Trail. Neither the ascent nor the descent are particularly steep, so you might think that you didnβt climb up that much. Nevertheless, enjoy the view and celebrate your achievement! If you like, you can hike up to the nearby summit to find a geological marker.
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A small sign on a wooden post marks the High Point of the Colorado Trail. This is an amazing place to pause and catch your breath (if you can at 13,271 feet!), take in the stunning panoramic views, and bask in your amazing accomplishment.
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Blanca Peak is a very menacing, 14350 ft summit, in Sangre de Cristo Wilderness. Reaching the peak is usually combined with a trip via Ellingwood Point, as the summits are close to one another. The trail to Blanca Peak is highest and less technical than Ellingwood. Some alpine hiking experience is required to get to this summit.
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From here you can look south out over Maggie Gulch, Canby Mountain, Sheep Mountain, and the Weminuche Wilderness. The Hardrock 100 route and a few old abandoned gold mines can be seen throughout the valley.
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Frequently Asked Questions
What unique geological formations can I expect to see in the Rio Grande National Forest?
The Rio Grande National Forest is rich in diverse geological formations. You can explore areas shaped by ancient volcanic activity, such as the dramatic ash and tuff rock formations at Wheeler Geologic Area, which resemble spires and pinnacles. Another notable feature is the Natural Arch β°οΈ, formed uniquely within a volcanic dike. The Sangre de Cristo Range also offers dramatic uplifted formations carved by glaciation.
Where can I find impressive natural arches in the Rio Grande National Forest?
The most prominent natural arch is the Natural Arch β°οΈ, also known as La Garita or La Ventana Arch. This striking formation is 40 feet tall and 30 feet wide, uniquely formed within a volcanic dike. It's located about 11 miles northwest of Del Norte, Colorado, and offers expansive views across the San Luis Valley.
Are there any significant river features to explore in the area?
Yes, the Rio Grande National Forest is home to the Rio Grande Headwaters. This humble stream, located at the base of Canby Mountain, marks the beginning of the fourth-longest river in the United States. It's a significant ecological and historical point of interest.
What cultural or historical significance do these natural monuments hold?
Many natural monuments in the region carry cultural significance. For instance, the Natural Arch β°οΈ is a sacred site for the Jicarilla Apache and Ute tribes and is still used for ceremonies today. The area's geological history also reflects millions of years of natural processes, offering a profound glimpse into the past.
What outdoor activities can I do near these natural monuments?
The Rio Grande National Forest offers a wide range of outdoor activities. You can find numerous opportunities for hiking, including trails like the Colorado Trail segments. For cyclists, there are options for mountain biking and touring bicycle routes, such as the Willow Creek Drainage Pond loop.
Are there challenging natural monuments for experienced adventurers?
Absolutely. For those seeking a challenge, Kit Carson Mountain offers a demanding 14er adventure with class 2 and 3 climbing sections, requiring alpine hiking experience. The Highest Point of the Colorado Trail, at 13,271 feet, also provides a significant achievement and stunning panoramic views.
What is the best time of year to visit the natural monuments in Rio Grande National Forest?
The best time to visit generally depends on the activity. Summer and early fall (June to September) offer the most accessible conditions for hiking and exploring high-altitude areas like the Highest Point of the Colorado Trail, with milder weather and less snow. Some remote areas, like Wheeler Geologic Area, are best accessed in summer due to challenging road conditions.
Are there any viewpoints offering panoramic vistas of the Rio Grande National Forest?
Yes, several locations provide breathtaking views. The Highest Point of the Colorado Trail offers stunning panoramic views at 13,271 feet. Additionally, the Maggie Gulch Overlook provides expansive views south over Maggie Gulch, Canby Mountain, Sheep Mountain, and the Weminuche Wilderness.
What makes the Wheeler Geologic Area a unique natural monument?
The Wheeler Geologic Area is unique for its dramatic volcanic ash and tuff rock formations, sculpted over millions of years into spires and pinnacles. Often compared to Bryce Canyon, it was Colorado's first national monument. Its remote and challenging accessibility ensures a secluded and immersive wilderness experience, showcasing the power of erosion on volcanic remnants.
Are there any natural monuments suitable for families?
While some areas require strenuous effort, the general beauty of the Rio Grande National Forest offers family-friendly experiences. Exploring the area around the Rio Grande Headwaters can be a gentle introduction to the region's natural wonders. Always check specific trail difficulties and conditions when planning family outings.
What are some lesser-known or 'hidden gem' natural monuments in the forest?
Beyond the more popular sites, areas like Penitente Canyon and Elephant Rocks offer further impressive volcanic rock formations. Penitente Canyon is also a renowned rock climbing area, providing a different kind of natural monument experience for those seeking adventure away from the main trails.
What should I know about accessibility for natural monuments in the Rio Grande National Forest?
Accessibility varies significantly. Some natural monuments, like the Natural Arch β°οΈ, require a steep scramble from the end of a rough gravel road. Remote areas such as the Wheeler Geologic Area often necessitate a high-clearance 4x4 vehicle or a strenuous hike, making them less accessible for casual visitors.
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