Snow Canyon State Park – Hiking Petrified Dunes and Exploring Lava Tubes

Last updated on November 25th, 2023 at 08:18 pm

Snow Canyon is an incredibly scenic State Park in Utah’s southwest corner. It’s located just north of St. George, the area’s largest city, and offers some amazing hiking opportunities. Petrified sand dunes, lava tubes, and extinct volcanoes are just some of this incredible Park’s geologic features.

On a recent road trip to Zion National Park, I made it a point to also visit Snow Canyon – it’s less than an hour away from Zion. And while Zion NP is usually very crowded, Snow Canyon State Park is usually not.  During this particular March trip, we visited Zion on Thursday and Friday, avoiding the especially large weekend crowds. Then, we spent a crowd-free Sunday morning in Snow Canyon State Park.  And while it would take at least two days to really appreciate everything Snow Canyon has to offer, we were still able to experience quite a lot in our one morning.  I’ll show you…

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An Overlook and An Overview

Our first stop of the morning was the Snow Canyon Scenic Overlook. The view here is beautiful and is well worth a stop.  The Overlook is accessed from the main highway that leads from St George to the Park’s North Entrance.  It’s better marked on Google Maps than it is from the road.  Watch closely though and you will see a small sign on the highway’s west side.  A dirt road takes you to the Overlook where you will be greeted with spectacular views out across the valley below to the Park’s red and white sandstone cliffs.

The scenic overlook at Snow Canyon State Park near St. George Utah

Snow Canyon is not named for the white stuff.  Snow seldom falls in this part of Utah. Instead, Snow Canyon State Park is named for Lorenzo and Erasmus Snow – two Mormon pioneer leaders that played a major role in settling this part of Utah.  In addition to the spectacular sandstone cliffs and canyons, Snow Canyon State Park is known for its Petrified Dunes and for its Volcano Field.  From the overlook, both can be seen in the valley below.

The Petrified Dunes were once sand dunes but over the time turned to sandstone.  And the Santa Clara Volcano Field is extensive lava flow from two nearby volcanic cones that spewed lava throughout the area a really long time ago.  In fact, the Cinder Cone Trail in the north part of the Park, takes you down into one of these extinct cones. 

Three Trails, One Parking Lot

After spending some time enjoying the view, we entered Snow Canyon at the Park’s North Entrance. The fee is $10 per vehicle for Utah residents and $15 for non-residents.). We then drove south for a few miles to the Petrified Dunes parking area. From here, we were able to access all three trails I intended on hiking that morning – Petrified Dunes, Butterfly, and Lava Flow.  We passed the Lava Flow trailhead parking lot on the way, but the Petrified Dunes lot provides central access to all three trails.  

Snow Canyon State Park offers many different hikes, but since we only had one morning to spend in the Park, I was forced to choose just a few.

I wanted to hike the Petrified Dunes Trail because, come on, petrified dunes are pretty cool. 

And I wanted to hike the Lava Flow Trail because it’s known for its explorable lava tubes – and we came prepared with head lamps to go underground. 

Then, the  Butterfly Trail is a short scenic trail that connects the two.  

The Petrified Dunes Trail

Close up picture of a Petrified Sand Dune at Snow Canyon State Park

Yep, that’s a pretty cool picture. That is what a petrified sand dune looks like up close.

We hiked the Petrified Dunes Trail first. After taking the only trail from the parking lot, it soon splits in two directions. A trail marker guides you towards either the Petrified Dunes trail to the south or the Butterfly and Lava Flow Trails to the north.

Trail marker for the Petrified Dunes, Buttefly, and Lava Flow Trails

Below is the trail map showing the confluence of the three different trails from my Gaia GPS App, which I used for the first time while in Snow Canyon State Park. I found it very useful for showing me exactly where I was during our hiking, especially on the Petrified Dunes Trail (more on that ahead). I did have an adequate cell signal while in this area of the Park (Verizon).

Trail Map for Snow Canyon hikes from the Gaia GPS app

Here’s some of the amazing sites we saw while hiking the Petrified Dunes Trail:

Beginning of the Petrified Dunes Hike in Snow Canyon

The Trail starts off flat and sandy. The Dunes can be seen rising up in the distance with Snow Canyon’s red sandstone cliffs behind.

Close Up of the irregular surface of a Petrified Sand Dune

Soon, you will find yourself scampering up and down the sandstone dunes and their beautifully variegated surfaces.

Petrified Sand Dunes and Red Cliff vistas in Snow Canyon State Park

A series of Petrified Dunes along the Petrified Dunes Trail

Moqui Marbles

Another geologic feature in abundance along this trail are Moqui Marbles. These are small balls of sandstone that are coated by an iron ore. They are most commonly found in Utah and Arizona….and Mars. Yes, Mars has its own version, though the Martian version is formed exclusively from iron ore.

The name Moqui comes from the Hopi tribe of Native Americans. They believed the spirts of the their dead ancestors would come down from the heavens at night and play games with the marbles. The spirits would then leave the marbles behind as a sign that they were doing well in the afterlife.

Visitors to Snow Canyon also need to leave them behind. It is illegal to remove Moqui Marbles from Utah’s public lands.

Moqui Marbles along the Petrified Dunes Trail in Utah's Snow Canyon
Moqui Marbles nearly covered the side of this dune

Easy? I Say Moderate

AllTrails.com rates the Petrified Dunes trail as easy. I disagree.  It’s easy for some of its length, but there are several spots where climbing steep sandstone surfaces with very irregular surfaces is required.  Sure-footedness is a necessity. Consequently, I would rate the trail as moderate.

Steep hiking along the Petrified Dunes Trail in Utah's Snow Canyon State Park

Also, the trail itself is not particularly well marked.  That doesn’t mean you will get lost.  It’s basically a straight north-south trail across irregular sandstone surfaces.  But it’s easy to wander along from one dune to the next, chasing views and cool rock formations, and then find yourself scrambling up and down a bunch of steep surfaces, trying rejoin your perceived vision of where the trail should be. 

We wandered off the trail almost immediately after arriving at the first dunes, lost in the natural wonder.  On our way back though, we found that there are small brown metal trail markers attached to the sandstone indicating the official trail. 

Trail Markers along the Petrified Dunes Trail

Hidden Pinyon Overlook

The Petrified Dunes Trail is 0.6 miles in length (one-direction), though we added to that distance with our off-trail wandering.  At its end, the trail joins the Hidden Pinyon Overlook Trail.  Definitely follow this.  It only adds a quarter mile to the hike and takes you up a small volcanic hill for amazing 360 degree view across the canyon. 

Looking South from the Hidden Pinyon Overlook in Snow Canyon State Park
Looking South from the Hidden Pinyon Overlook
Looking North from the Hidden Pinyon Overlook in Snow Canyon
Looking North from the Hidden Pinyon Overlook

The Butterfly Trail

The Butterfly Trail along the northern edge of the Petrified Dunes in Snow Canyon

After finishing the Petrified Dunes Trail, next up was the Butterfly Trail. Butterfly would take us to our ultimate destination – Snow Canyon’s Lava Tubes.  

The Butterfly trail is 0.5 mile in length and ends by connecting to the Lava Flow Trail.  It’s not a unique hike in and of itself.  It’s basically just a connector trail. But it does skirt past the northern edge of the petrified dunes, and like all trails in the Park, offers great views of the surrounding beauty. 

AllTrails rates it as moderate, but I thought it was much easier than the Petrified Dunes trail. 

Lava Flow Trail

Walking along the Lava Flow Trail in Snow Canyon State Park

As I mentioned earlier, lava rock is prominent in Snow Canyon State Park due to the area’s past volcanic eruptions.  The Lava Flow Trail takes you through a lava field where you can explore three different underground lava tubes. 

Lava Flow Trail does have its own parking lot, and from there, the hike to the final and biggest lava tube (#3) is 1.3 miles round trip.

Alternatively, you can do as we did, and get there via the Butterfly Trail. It meets up with the Lava Flow Trail as the latter heads north to south. From this crossroads, Lava Tube #3 was only a few hundred feet to the left and Lava Tube #2 was only a few hundred feet to the right. 

Lava Flow Trailhead Marker

The name Lava Flow Trail accurately describes the trail’s terrain.  The trail itself is covered in jutting lava rock.  Watch your step – it’s easy to trip. 

Jagged and jutting Lava Rock along the Lava Flow Trail

The Lava Tubes

Lava tubes are underground channels that were formed long ago by flowing lava.  Exploring the tubes is this trail’s highlight. We came prepared with headlamps, and I’m glad we did.  A flashlight or phone light would have been difficult to use – both hands were required for scrambling through narrow spaces and over irregular surfaces.

(Note: those irregular surfaces scratched up Mrs TT’s Apple Watch face – it’s probably best to remove yours before entering.)

Lava Tube #1

In my pre-trip research, I had mistakenly read that Lava tube #1 was the easiest to enter. So we headed there first. It’s located north of Lava Tube #2.  But note – it is not the easiest to access.  It’s the hardest! 

Lava Tube #1 has two different possible entrances, but both are very narrow and curved.  My height made it difficult for me to enter.  Mrs. TT was able to wiggle down into the entrance for a bit. 

One of the entrances to Lava Tube #1
One of the two small entrances to Lava Tube #1

We were quite disappointed at this point, thinking if this Tube was the easiest, we had no chance at the others.

But gratefully, as we soon discovered, our sadness was for naught.   It’s Lava Tube #3 that’s the easiest.

Lava Tube #2

Next up though was Lava Tube #2.  Its entrance was bigger than #1, but I still had to shimmy to get in and out. It’s definitely not for the claustrophobic.

The entrance to Lava Tube #2 with the red and white cliffs of Snow Canyon in the background
The entrance to Lava Tube #2
Entering Lava Tube #2 along the Lava Flow Trail

Deeper inside Lava Tube #2 in Snow Canyon State Park
Mrs. TT was able to explore further into Lava Flow #2 than me. I was content to stay further back and take pictures

Lava Tube #3

Finally, on to Lava Tube #3. This is the Lava Tube to really explore. 

There are two big openings into this tube – one on the east and one on the west. We chose the east side since most hikers seemed to be entering there.  I could walk in standing up and it’s very much like a cave rather than a narrow tube.  Inside there were several chambers and we were able to walk in at least 70 feet. The surface of the tube floor is very irregular with large lava rocks, so good lighting and caution is an absolute must.  

The entrance to Lava Tube #3 in Snow Canyon
The entrance to Lava Tube #3. The hole in the ground is bigger in reality than it appears in the picture
Inside the east entrance to Lava Tube #3 looking out
Inside the east entrance to Lava Tube #3 looking out
From deeper inside Snow Canyon's Lava Tube #3 looking out.
From deeper inside Lava Tube #3 looking out. Note all the irregular surfaces. Proper lighting is essential.

Final Thoughts and Tips

We spent 3 hours at Snow Canyon State Park, including 1 hour hiking Petrified Dunes (1.8 miles) and 1.5 hours exploring the Butterfly/Lava Flow Trails (also 1.8 miles).

Snow Canyon State Park is located within the Red Cliffs Desert Reserve. This 45,000 acre reserve was created to protect the endangered Mojave Desert Tortoise and other indigenous desert species. If you happen to see a tortoise, it’s illegal to even pick it up.

For a look at a few other trails in the Park, check out this Snow Canyon post by one of my blogger friends.

You can find many additional hiking trails in the St. George area outside of Snow Canyon. HikeStGeorge.com is a great resource.

If you would like to learn about 2 other great Utah State Parks, check out my posts on Dead Horse Point and Kodachrome Basin

And feel free to read more about our the two days we spent in Zion National Park on this trip.


    • thethoroughtripper

      Exactly what I thought when I first read about it, and then quickly clicked over to Amazon and bought head lamps

  • Carina | bucketlist2life

    It’s crazy how you always hear about the same national parks and others get overlooked… I’ve never heard about Snow Canyon NP before. The petrified dunes look super intrigiung to me as a geologist. I’ve added it to my USA bucketlist, which is becomming increasingly long…


    I love Snow Canyon State Park SO much. I only got to spend one afternoon in the park before heading on to Zion, but I would absolutely go back for a long weekend here. Of course, my favorite part of the park is Jenny’s Canyon. 🙂

    • thethoroughtripper

      I wish we would have had more time to explore more including Jenny’s Canyon. I think Snow Canyon will be a regular stopping place when we visit my parents

  • Ross

    What a great place. You did so much in a short time. I was very impressed by the signs and information as it looks a daunting place to navigate for a first timer. Think i’d give the lava tubes a miss though!

  • Sue

    I have been wanting to visit Snow Canyon. I would love to see the lava tubes and the petrified dunes. Utah definitely has beautiful state parks!

  • Jan

    How the petrified sandunes, the tectonic folds and above all, the landscape made me feel insecure and diminutive. Nature indeed has a power to overwhelm and conveys an understanding that it should be protected and cherished. Love the pics!

  • Linda Kouwenhoven

    I’ve had other things going on I’ve missed these gorgeous photos of yours. I don’t think I could ever tire of seeing those landscapes! So barren and yet so beautiful! The lava tubes are fascinating. Keep doing those road trips!

  • kasia

    I love all your posts about National Parks and this one is spectacular! The petrified sand dune and lava tubes look so cool and I would definitely love to explore them.

  • Smalltownplussize Tom

    I’ve never heard of this park but it’s definitely on our list now for a Utah road trip. Snow Canyon has some really cool geological features! We can’t wait to see the petrified sand dunes and I’ve always wanted to go inside a lava tube. Thanks for sharing this park.

  • Travel for a while

    I don’t know much about Utah but your posts make me think it should be on the list for a US trip. Snow NP looks like a great place to explore with all those rock formations. Beautiful photos too!

  • John Quinn

    This is another real gem Steven. Who knew sand dunes could be petrified? Or that ancestors played with marbles? I don’t know if I’d have the nerve to go into the lava tubes, and I know my mrs c wouldn’t. But it’s great to have gotten the guide nonetheless. I do love your Utah blogs.

  • Becky Exploring

    Snow Canyon looks like an awesome place to visit. Those petrified sand dunes are so cool – how does that happen?! – and I can see how it would be easy to wander off on your own adventure instead of sticking to the trail. Lava tube #3 would definitely be the one for me as the other two make me claustrophobic just looking at them!

  • Tracy

    This is quite possibly the best trail write-up I have seen. Our family loves to hike/travel and we scour the internet for information on the best trails and information and this blog checked all the boxes. From trail information (length, difficultly, trail markers, photos) to information on meals, this was great work – thank you for taking the time to share your experience!

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