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Hiking trails & Routes
United States
New Mexico
Sandoval County

Seismosaurus Trail

Easy

4.9

(4718)

5,542

hikers

Seismosaurus Trail

00:55

3.43km

30m

Hiking

Embark on an easy hike along the Seismosaurus Trail, where you will discover expansive desert views filled with colorful rock formations and impressive sandstone mesas. This route covers 2.1 miles (3.4 km) and involves a gentle elevation gain of 112 feet (34 metres), making it a perfect outing for about 54 minutes. As you walk, you will experience the unique atmosphere of the Ojito Wilderness, with its vivid badlands revealing layers from prehistoric periods.

When you plan your visit, remember that the trail offers very little shade, so it is wise to prepare for warmer conditions, especially during the hotter months. While the area is rich in natural history, collecting fossils and petrified wood is strictly prohibited by law to preserve this unique environment. You will find parking readily available at the trailhead, ensuring easy access to start your adventure.

The trail leads you directly to the historic Seismosaurus Dig Site, a significant location where one of the largest dinosaurs ever known was excavated. Further along the path, you can also find ancient petroglyphs carved into rock surfaces, offering a fascinating glimpse into the rich human history of this landscape. These unique features make the Seismosaurus Trail a notable destination for anyone interested in geology, paleontology, and ancient cultures.

Last updated: April 23, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Ojito Wilderness

Waypoints

A

Start point

Parking

Get Directions
1

210 m

Seismosaurus Trail

Highlight (Segment) • Trail

The Seismosaurus Trail is about a mile long and relatively flat. It leads up to a small cave with petroglyphs, where the trail terminates. Sometimes the trail is tricky to follow, so have the appropriate navigation ready. Parking can be found at Ojito Wilderness Parking on Cabezon Road. This trail was named after the Seismosaurus dinosaur uncovered here, one of the largest ever dug up in 1985.

Tip by

2

1.72 km

Seismosaurus Petroglyphs Cave has petroglyphs thought to be over a thousand years old, depicting people, animals, and more. Use your imagination to see into the past and enjoy the magnificent overlook of the Ojito Wilderness.

Tip by

B

3.43 km

End point

Parking

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Way Types & Surfaces

Way Types

3.30 km

109 m

Surfaces

3.41 km

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Elevation

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Friday 9 October

25°C

10°C

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Frequently Asked Questions

Where can I park to access the Seismosaurus Trail?

The trail is located in the Ojito Wilderness near San Ysidro, New Mexico. Access typically involves driving to a designated trailhead parking area within the wilderness. Specific parking details are usually found on local land management websites or detailed maps of the Ojito Wilderness.

Is the Seismosaurus Trail dog-friendly?

Yes, the Ojito Wilderness generally allows dogs, but they should always be kept on a leash to protect wildlife and ensure a pleasant experience for all hikers. Please remember to pack out all pet waste.

What is the best time of year to hike the Seismosaurus Trail?

Spring and fall are ideal for hiking this trail, offering milder temperatures. Summer can be very hot with little to no shade, making early morning or late afternoon hikes preferable. Winter can be pleasant, but check weather conditions for potential snow or ice, though it's generally accessible year-round.

Are there any permits or fees required to hike in the Ojito Wilderness?

No, there are typically no permits or entrance fees required to access the Ojito Wilderness or hike the Seismosaurus Trail. However, always check the latest regulations from the Bureau of Land Management (BLM) before your visit, as rules can change.

What is the terrain like on the Seismosaurus Trail?

The trail is mostly flat, but hikers should expect some rocky sections and sandy areas, particularly around the dig site. The path sometimes follows old vehicle tire tracks. While rated easy, sure-footedness can be beneficial on certain parts.

What are the main points of interest along the Seismosaurus Trail?

The trail leads to the historic Seismosaurus Dig Site, where one of the largest dinosaurs was excavated. You can also discover ancient Seismosaurus Petroglyphs Cave, offering a glimpse into the area's human history. The route itself, known as the Seismosaurus Trail, showcases expansive desert views, colorful rock formations, and impressive sandstone mesas.

Is there shade available on the trail?

No, there is little to no shade along the Seismosaurus Trail. Hikers should plan accordingly, especially during warmer months, by bringing plenty of water, wearing sun protection, and considering hiking during cooler parts of the day.

Is the Seismosaurus Trail suitable for families with children?

Yes, the trail is generally considered suitable for all skill levels, including families and occasional hikers, due to its easy difficulty rating and mostly flat terrain. The unique paleontological and archaeological features can be particularly engaging for children.

Can I collect fossils or petrified wood found on the trail?

No, collecting fossils, petrified wood, or any other archaeological remains is strictly prohibited by law in the Ojito Wilderness. These items are protected to preserve the natural and historical integrity of the area for future generations.

What kind of wildlife might I encounter on the Seismosaurus Trail?

The desert environment supports various wildlife. You might spot lizards, snakes (be cautious), various bird species, and possibly larger mammals like jackrabbits or coyotes, especially during dawn or dusk. Always observe wildlife from a respectful distance.

Is the Seismosaurus Trail a loop or an out-and-back route?

The official Seismosaurus Trail to the dig site is primarily an out-and-back route. While other routes exist in the Ojito Wilderness that can extend your hike, the core trail is not a loop.

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