Osprey Falls

Yellowstone National Park / Mammoth, Wyoming, USA

About Osprey Falls

Hiking Distance: 8 miles round trip
Suggested Time: 4-5 hours

Date first visited: 2004-06-23
Date last visited: 2004-06-23

Waterfall Latitude: 44.92774
Waterfall Longitude: -110.68176

Osprey Falls was an attractive 150ft waterfall (though this might be a bit of an overestimate) nestled deep inside the steep and rugged Sheepeater Canyon on the Gardiner River.

Apparently, getting to the falls used to be a drive around to the east side of Bunsen Peak before a short but steep mile-long hike led to the falls.

Osprey_Falls_040_06232004 - Osprey Falls
Osprey Falls

However, during our visit (and beyond into the future), that road was only open to foot and mountain bike traffic along the four-wheel-drive track.

So that brought the total amount of hiking to 8 miles round trip.

By the way, Bunsen Peak was named after Robert Wilhelm Eberhard von Bunsen of “bunsen burner” fame which was lab equipment I recalled using in Chemistry class in both high school and college.

That was probably why this story rung a bell with me.

Osprey_Falls_052_06232004 - Bunsen Peak
Bunsen Peak

However, Bunsen made his 19th century contributions to the study of geothermal phenomena in Iceland.

This association with geothermal research was probably how Bunsen got a peak named after him in Yellowstone National Park!

Osprey Falls Trail Description – hiking Around Bunsen Peak

Overall, the Osprey Falls hike took us between 4 to 5 hours.

The trail around the southern end of Bunsen Peak (about the first three miles of the hike) was pretty flat and easy as it passed through a mixture of mostly grasslands and some new sproutlings.

Osprey_Falls_003_06232004 - Wildflowers blooming along the 4wd track
Wildflowers blooming along the 4wd track

Those infant trees indicated to us that the forest cover that was once here was slowly starting to recover, but apparently this area was pretty hard hit by the 1988 wildfires.

Throughout this section of the hike, Bunsen Peak always loomed to our left. We even spotted a few hikers wishing to check out the view from up there.

In addition to being flat, this flat three mile stretch was also pretty exposed to the sun thanks to the lack of mature trees providing shade.

We particularly thought of how exposed we were when we were overtaken by a quickly sprouting pop-up thunderstorm where lightning flashed around us.

Osprey_Falls_006_06232004 - Julie hiking along the 4wd track on the Osprey Falls Trail as it went around the south-facing side of Bunsen Peak
Julie hiking along the 4wd track on the Osprey Falls Trail as it went around the south-facing side of Bunsen Peak

You can imagine with lightning going off all around us while we had no chance of extensive shelter that we knew how easily we could’ve been lightning rods since we were just as tall (if not taller) than most of the sproutlings around us.

Needless to say we were quite scared and we were quite fortunate to have not been hit by a bolt as we weathered the storm, so to speak.

So based on this experience, perhaps it would be a good idea to get an earlier start than we did (we started at almost midday) to minimize the chances of getting caught in one of those pop-up afternoon thunderstorms in the Summer.

As we continued to get closer to the eastern slopes of Bunsen Peak, we could see off to our right the depths of Sheepeater Canyon and the Gardiner River that flowed through it.

Osprey_Falls_007_06232004 - Looking into Sheepeater Canyon from the Osprey Falls Trail
Looking into Sheepeater Canyon from the Osprey Falls Trail

When we eventually made it to the eastern slopes, that was when we saw a signpost indicated a fork in the trail.

Osprey Falls Trail Description – descending into Sheepeater Canyon

And that was where we took the fork that led downhill into the Sheepeater Canyon to our right. The other forks in the vicinity would have led us either around Bunsen Peak or up to the summit of the nearly 9000ft peak.

The Sheepeater Canyon part of the trail represented the last mile. It descended steeply in several switchbacks.

Although the trees (or what was left of them) seemed much taller than the flat area around the southern slopes of Bunsen Peak, this area looked like it too was severely affected by the 1988 forest fires.

Osprey_Falls_008_06232004 - Julie on the trail descending into Sheepeater Canyon and the many burnt trees around us on the Osprey Falls Trail
Julie on the trail descending into Sheepeater Canyon and the many burnt trees around us on the Osprey Falls Trail

Indeed, the trees we saw here were hauntingly bare and sickly.

Finally, at the base of the descent, the narrow trail eventually got us close to the base of Osprey Falls.

Even though the falls was stated to be 150ft tall, its twisting nature kind of made it difficult to fully appreciate its full height as it always seemed like we could only see part of it but never the whole thing in one shot.

In our temptation to improve our views, we had to exercise caution because the slopes were both loose (making them slippery) and steep with some mild drop off exposure.

Osprey_Falls_011_06232004 - Julie heading upstream within Sheepeater Canyon towards Osprey Falls
Julie heading upstream within Sheepeater Canyon towards Osprey Falls

Although we did make an attempt to scramble a little off the main trail for that better view of Osprey Falls, we didn’t try real hard given our comfort level with the risks involved.


Osprey Falls resides in Yellowstone National Park near Gardiner in Park County, Wyoming. It is administered by the National Park Service. For information or inquiries about the park as well as current conditions, visit the National Park Service website.

Osprey_Falls_046_06232004 - We saw this bird while hiking that flat three-mile stretch along the southern slopes of Bunsen Peak
Osprey_Falls_043_06232004 - Looking into Sheepeater Canyon before the descent
Osprey_Falls_010_06232004 - Julie descending further down the steep trail into Sheepeater Canyon
Osprey_Falls_025_06232004 - The sun started to show itself again when we made it to Osprey Falls
Osprey_Falls_003_jx_06232004 - That's me trying to steady the camera with my trekking poles for a long exposure photo
Osprey_Falls_035_06232004 - Osprey Falls in long exposure
Osprey_Falls_048_06232004 - Julie heading back on the three-mile stretch with some partially snowy mountains in the distance
Osprey_Falls_051_06232004 - Hiking back to the Swan Flat with the scenic Gallatin Range looming in the distance
Osprey_Falls_053_06232004 - Almost made it back to the trailhead


To get to the Osprey Falls Trailhead, look for parking near a pullout area or along the Grand Loop Road by the Swan Lake Flat (roughly 5 miles south of Mammoth).

It’s a large, flat, and extensive grassy area.

There is a parking area with limited space at the Swan Flat Trailhead, but there are also additional pullouts across the road as well as informal roadside pullouts further along the Swan Flat portion of the drive.

Mammoth and the Mammoth Hot Springs is about 90 minutes drive (84 miles) from Bozeman, Montana. Mammoth is also under 90 minutes drive (49 miles) from West Yellowstone, Montana. West Yellowstone is roughly 4.5 hours drive from Salt Lake City.

Tagged with: sheepeater, bunsen peak, gardner river, mammoth, mammoth hot springs, yellowstone, wyoming, waterfall, rockies, rocky mountains, swan flat

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Johnny Cheng

About Johnny Cheng

Johnny Cheng is the founder of the World of Waterfalls and author of A Guide to New Zealand Waterfalls. Over the last 2 decades, he has visited thousands of waterfalls in over 40 countries around the world and nearly 40 states in the USA.
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