Big Obsidian Flow - Image 1
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Big Obsidian Flow

4.8
·638 reviews·Bend, United States

Walk across Oregon's youngest lava flow, a stunning 1,300-year-old expanse of volcanic glass.

Highlights

Must-see attractions

Social content

Social

From TikTok & Reddit

Best Time

Late June - September

Snow melts, trails clear

CrowdMedium
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Big Obsidian Flow - Image 1

Big Obsidian Flow

Best Time

Late June - September

Snow melts, trails clear

CrowdMedium

Highlights

Must-see attractions

Walk across Oregon's youngest lava flow, a stunning 1,300-year-old expanse of volcanic glass.

4.8
(638 reviews)

"Stunning views of an immense lava flow and of Paulina Lake. It's fun to lift up large chunks of pumice that weigh hardly anything."

Vertical photo
TIP

👟 Wear Sturdy Shoes

Obsidian is sharp! Closed-toe shoes are essential for safety on the trail.

🗺️ Check Park Website

Conditions vary; snow can linger until mid-June. Get maps and permit info.

Third hero image

Highlights

Discover the most iconic attractions and experiences

The Obsidian Flow Itself

The Obsidian Flow Itself

The main trail

Walk across a 1,300-year-old lava flow made entirely of volcanic glass. Witness striking differences in rock textures and bubble formations.

Instagram
Pumice vs. Obsidian

Pumice vs. Obsidian

Along the trail

Compare the dense, sharp obsidian with the surprisingly lightweight pumice rocks scattered nearby.

Reddit
Panoramic Views

Panoramic Views

Higher points on the trail

Enjoy stunning vistas of Paulina Lake and the surrounding snow-capped mountains.

Reddit
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Planning Your Visit

Footwear is Key!

Obsidian is sharp as glass! Closed-toe shoes are a must for navigating the Big Obsidian Flow trail. Avoid bare feet or flimsy sandals to protect yourself from sharp volcanic glass shards. Instagram

Timing and Access

The Big Obsidian Flow can be snow-covered until mid-June. Check the park website for current conditions before your visit. A parking permit is required and can be purchased at a hut on the drive up. Reddit

Best Times

When
Late June - September
Why
Snow melts, trails clear
Crowd
Medium
When
Weekday mornings
Why
Fewer crowds, better photos
Crowd
Low

Insider Tips

from TikTok, Instagram & Reddit

Big Obsidian Flow Trailhead Giant! The Big Obsidian Flow Trailhead sits inside the Newberry National Volcanic Monument, between Paulina Lake and East Lake in central Oregon. Coordinates: 43.706433 N, 121.236031 W #fyp #mudfossils #biogeology #giants #titans #history #geology #GiantsTitansUnexplained #TheRocksWereAlive @NotForOurEyes @slayinghistory
@giantstitansunexplained
62 likes • 1.2K views

👟 Wear Sturdy Shoes

Obsidian is sharp! Closed-toe shoes are essential for safety on the trail. Instagram

🗺️ Check Park Website

Conditions vary; snow can linger until mid-June. Get maps and permit info. Reddit

I guess when I heard “Big Obsidian Flow” I was expecting one big sheet of volcanic glass. 🤷‍♀️ That view though 😍 #newberryvolcanicmonument #obsidian #bigobsidianflow #hikingwithkids #fulltimetravelfamily #fulltimefamilies #fulltimervfamily
nrpyle
26 likes • 914 views
Big Obsidian Flow Trail in Newberry National Volcanic Monument. #newberrynationalvolcanicmonument #bendoregon #obsidian #rockhound #oregon #oregonhikes #visitoregon #traveloregon #travelgram #travelreels #travel #roadtrip #volcano #hiker #hikerlife #hiking #hikingadventures #hikingoregon #pnw #pnwonderland #pnwadventures
wyldepnw
16 likes • 141 views

💧 Bring Water & Sunscreen

Little to no shade on the trail; sun can be blistering. Reddit

🚶‍♀️ Trekking Poles Help

Useful for balance on the uneven, rocky terrain. Reddit

A day to remember with family at the Big Obsidian Flow! 🪨
qyatt_mic
21 likes • 264 views

Tips

from all over the internet

👟 Wear Sturdy Shoes

Obsidian is sharp! Closed-toe shoes are essential for safety on the trail. Instagram

🗺️ Check Park Website

Conditions vary; snow can linger until mid-June. Get maps and permit info. Reddit

💧 Bring Water & Sunscreen

Little to no shade on the trail; sun can be blistering. Reddit

🚶‍♀️ Trekking Poles Help

Useful for balance on the uneven, rocky terrain. Reddit

📸 Capture the Texture

The unique glassy surface makes for striking photos. Instagram

What Travellers Say

4.8
(638 reviews)

Reviews Summary

Visitors consistently praise the Big Obsidian Flow for its unique geological features and stunning natural beauty, particularly the vast expanse of volcanic glass and the contrasting pumice. The views of Paulina Lake and surrounding mountains are also a highlight. However, some find the trail rough and uneven, recommending sturdy footwear and caution, especially for those with balance issues. Crowds can be a factor during peak summer months.

"An excellent visit! Firstly, you have to pay attention to the map (on the park's website) and where various things are located. It would otherwise be easy to miss it if you didn't know it was there.
After parking in the large lot, walk about 100 feet to the metal stairs, from which you climb onto the lava flow. At the end of those stairs, you can either call it a day, turn around and come back down, or keep going and clamber over the lava. Thankfully, many people before us have made a dusty path, so we followed that. About half-way, the path splits into two, but following either direction brings you back to the same point. You're following a loop, in other words.
We visited July 1...I monitored the park website beforehand while planning this trip. It was closed up until mid-June because it was still snowed in. When we got there, there were still icy patches that we had to negotiate, but nothing too hazardous.
The obsidian rocks are well worth touching and comparing with the adjacent pumice. We got a good view at the top of the distance snowed-in mountains...I think they were the Sisters mountains if I'm not mistaken.
Excellent place to visit, in summary."

Kevin Short

"Loved seeing all the cool rocks and walking amongst it all! Not too long of a walk, it’s like a lollipop where there’s a little loop at the end and it meets back up with the same trail. Has nice views all around and is well worth it! If you don’t have good balance, it could be tricky and potentially dangerous because obsidian can be sharp and the path was quite rocky/not paved."

Grace Yao

"Well, probably a bit late in the year for a trip up (Nov 21), but it worked out lovely. About 4 inches of snow on the trail today, but easy to navigate with boots and hiking sticks. The sun was out and the obsidian was glorious. Sadly, the paved road was closed (just 3 days prior - bad timing on my part), but google maps took us up some dirt roads that got us there. Some snow on the roads as i neared the top, but my AWD sedan with snow tires and 5.5 inches of ground clearance was up to the job."

Gerrit Nyland

What People Like

Unique obsidian landscape
Stunning lake views
Geological contrast

What People Dislike

Rough, sharp trail
Can be crowded

Frequently Asked Questions

🚇 🗺️ Getting There

The Big Obsidian Flow is located within the Newberry National Volcanic Monument in Oregon. It's a drive from Bend, often accessed via Paulina Lake Road. Follow signs for the Big Obsidian Flow Trailhead and Interpretive Site. InstagramReddit

Yes, there is a large parking lot available at the trailhead. A parking permit is required for entry into the monument, which can be purchased at a designated hut on the drive up. Reddit

The drive involves paved roads, but can be winding. Some visitors mention it's a bit of a drive, but well worth it for the unique landscape. Reddit

Typically, the area is snow-covered until mid-June, making it inaccessible. It's best to check the park's website for current road conditions and opening dates before planning a winter or early spring visit. Reddit

While the main roads are generally accessible, the trail itself is rocky and uneven. RVs can access the parking area, but caution is advised on the surrounding park roads. TikTok

🎫 🎫 Tickets & Entry

Yes, a parking permit is required for the Newberry National Volcanic Monument, including the Big Obsidian Flow. These can be purchased at the visitor hut on the drive up. Reddit

The Big Obsidian Flow is an outdoor natural attraction and is generally accessible during daylight hours when not covered by snow. The monument itself has seasonal access, typically opening in late spring or early summer. Reddit

There is a fee for the parking permit required for the Newberry National Volcanic Monument. Specific pricing can be found on the park's official website or at the permit purchase location. Reddit

Permits are typically purchased on-site at the visitor hut. It's advisable to check the park's website for any updates on purchasing options or if advance booking is available. Reddit

There are no age restrictions for visiting the Big Obsidian Flow, but the terrain can be challenging. It's recommended for visitors of all ages to wear appropriate footwear and exercise caution. TikTok

🎫 🧭 Onsite Experience

The trail begins with metal stairs leading onto the lava flow. It then becomes a loop over uneven, rocky terrain covered in obsidian and pumice. While some parts are well-trodden, it can be rough. Reddit

The trail is relatively short, often described as a loop. While you can turn back early, exploring the full loop offers the most comprehensive experience of the flow. Reddit

The trail is considered moderately difficult due to the uneven, rocky, and sharp terrain. Good balance and sturdy footwear are essential. Trekking poles can be helpful. Reddit

Sturdy, closed-toe shoes are absolutely essential due to the sharp nature of obsidian. Layers are recommended as temperatures can vary, and sun protection is crucial as there's little shade. Instagram

Yes, restrooms are available on-site at the Big Obsidian Flow, which is convenient for visitors. Reddit

📸 📸 Photography

Capture the stark contrast of the black obsidian against the sky, the unique textures of the volcanic glass, and the panoramic views of Paulina Lake. The interplay of light on the glassy surface is also a great subject. Instagram+1

Early morning or late afternoon light can create dramatic shadows and highlight the glassy textures of the obsidian. Midday sun can be harsh and create glare. Instagram

Absolutely! The obsidian and pumice rocks are the main attraction. You can get close-up shots of their textures and formations. Just be mindful of not disturbing the natural environment. Reddit

Drone usage is typically regulated within National Volcanic Monuments. It's best to check the specific rules and regulations for Newberry National Volcanic Monument regarding drone operation before your visit. TikTok

A wide-angle lens is great for capturing the expansive flow and surrounding landscape. A macro lens can be useful for detailed shots of the obsidian's texture. Instagram

For Different Travelers

Tailored advice for your travel style

👨‍👩‍👧 Families with Kids

The Big Obsidian Flow is a fantastic educational outing for families. Kids will be fascinated by the unique volcanic glass and the chance to compare it with lightweight pumice. The trail, while uneven, is manageable for most children who are comfortable walking on varied terrain. Ensure everyone wears sturdy, closed-toe shoes to protect against sharp obsidian shards. TikTokInstagramReddit

Bring plenty of water and snacks, as there are limited amenities on the trail itself. The views of Paulina Lake are also a nice reward. Consider turning back earlier if younger children tire easily, as the initial part of the trail offers a good introduction to the flow. Reddit

🚶‍♀️ Hikers & Nature Enthusiasts

For hikers, the Big Obsidian Flow offers a unique geological experience. The trail provides an opportunity to walk directly on a recent lava flow, observing its textures and formations up close. The loop trail, though short, presents a moderate challenge due to the uneven and sharp terrain. Reddit

Nature enthusiasts will appreciate the chance to learn about volcanic processes and compare obsidian with pumice. The surrounding landscape offers beautiful views of Paulina Lake and the caldera. Remember to check for snow conditions if visiting in late spring, and always prioritize safety with appropriate footwear and hydration. Reddit

Deep Dives

In-depth insights and expert knowledge

Geology of the Big Obsidian Flow

The Big Obsidian Flow is a remarkable geological feature within the Newberry Caldera, representing Oregon's youngest lava flow, estimated to be around 1,300 years old. It's composed almost entirely of obsidian, a type of volcanic glass formed when lava cools rapidly, preventing crystal growth. This rapid cooling results in its characteristic glassy texture and conchoidal fracture. The striking variations in appearance among the obsidian rocks are due to the number and size of gas bubbles trapped within the molten glass during its formation. Instagram+1

Visitors can easily observe the contrast between the dense, sharp obsidian and the much lighter, porous pumice rocks that are also abundant in the area. Pumice, formed from frothy lava, is so light it can float on water. Touching and comparing these two distinct volcanic materials firsthand offers a tangible lesson in geology. Reddit

The trail itself winds through this ancient flow, allowing you to walk directly on the solidified lava. It's a unique opportunity to witness the raw power of volcanic activity and understand how these landscapes are shaped over millennia. The Newberry National Volcanic Monument preserves this and other fascinating volcanic features for educational and recreational purposes. Instagram

Navigating the Big Obsidian Flow Trail

The Big Obsidian Flow Trail offers a unique hiking experience, but it requires some preparation. The journey begins with a climb up a flight of metal stairs, which immediately transports you onto the surface of the lava flow. From there, the trail becomes a loop, winding through the uneven terrain. Reddit

While a path has been worn by previous visitors, the ground is predominantly rocky and can be quite rough. Many travelers recommend trekking poles for added stability, especially when navigating the descent. The sharp nature of the obsidian means that closed-toe, sturdy footwear is not just recommended, but essential for safety. Avoid sandals or open-toed shoes at all costs, as the obsidian can easily cut through them. InstagramReddit

Be aware that there is very little shade along the trail, so sun protection, including sunscreen, hats, and plenty of water, is crucial, particularly during the hot summer months. The trail can also become congested during peak season, so visiting on a weekday or during off-peak hours can enhance the experience. Reddit

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