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Red Rock Coulee – An Otherworldly Alberta Landscape
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Red Rock Coulee Natural Area has an otherworldly feel to it. Littered with sandstone concretions, the red rocks measuring as much as 2.5 metres in diameter are formed naturally via the sediments they rest upon. The area is popular with geologists, photographers and hikers who don’t mind a lack of formal trails.
Red Rock Coulee is a scenic treasure – and yet it doesn’t see a lot of traffic. You’ll probably have the place to yourself.

How the concretions start
First you need a natural occurring nucleus just like a pearl. A bone or shell works well. The concretions grow by the concentric deposition of minerals around the grains before it hardens into rock. The concentric rings can be seen in some concretions.
According to the sign at the parking lot “the process by which concretions are formed leaves them harder and more resistant to erosional forces than the surrounding material. When the parent material erodes the spheres are left exposed and then they in turn begin to erode.”
Around Red Rock Coulee the landscape here is strewn with concretions left behind after the softer rock eroded away. Look for the beautiful lichens called Xanthoria that can withstand extremes of temperatures from -46°C to 42°C.
Red Rock Coulee feels like it’s in the middle of nowhere
Accessed via Highway 887, 60 kilometres south of Medicine Hat, near Seven Persons in southeast Alberta, Red Rock Coulee is not really on the way to anywhere. On a clear day you can see Montana’s Sweet Grass Hills, about 100 kilometres away from the high point in the parking lot.
We decided to make a detour and hit it on the way back from Writing-on-Stone Provincial Park. Although we didn’t spend much time in the area, there would be some lovely hiking. Just carry lots of water. Try to time your visit for sunrise or sunset, when the rocks positively glow.





The plants that grow in the area are extremely hardy. Look for prickly pear cactus, prairie crocus, juniper, sagebrush, broomweed and gumbo primrose.


Wildlife you might see in the area
Although we didn’t see any wildlife, it’s quite possible you’ll see mule deer, pronghorn antelope, white-tailed jack rabbits, bull snakes, rattlesnakes (give them space), short-horned lizards, and if you were very lucky – scorpions – as they are considered rare in Alberta.
It’s certainly worth making the detour to Red Rock Coulee if you’re nearby.
Further reading on things to do in southern Alberta
- Alberta’s Fabulous Table Mountain Hike
- A Visit to Southern Alberta’s Castle Provincial Park
- 5 Great Things to do in the Crowsnest Pass Area
- 3 Southern Alberta Provincial Parks That Should be on Your Radar
Click on the photo to bookmark to your Pinterest boards.
If you are lucky you will see a scorpion. . . Nah somehow I’m guessing you were ok with not seeing one. Interesting looking spot though.
@Cindy Love seeing scorpions – just not stepping on them.
Glowing rocks? How cool, Leigh!
Interesting landscape, for sure. I’m amazed that anything even grows there.
@Marcia A desolate but beautiful landscape all at the same time.
Such an unusual landscape. Certainly stirs the imagination…
@Sophie Even more so when there isn’t a soul around.
I have seen these first hand and there specimens that are much closer to perfect spheres. very odd to see such a thing just sitting on the surface like it was just put there.
I believe there is more at play then just wind erosion otherwise we would see these in other locations.I think they where formed from volcanic lava landing in deep water sort of the same way bird shot is made from lead. and for some reason they did not completely shatter
[…] Red Rock Coulee Natural Area sits out in the middle of seemingly nowhere, though it’s only 60 km from Medicine Hat. It’s a good place to see some of the world’s largest red rock sandstone concretions. There is also lots of hiking to do, but this is another area where there are no formal trails. Go prepared with lots of water and a sun hat, particularly if you visit in the summer. […]
[…] Red Rock Coulee: An Otherworldly Alberta Alberta Landscape […]
[…] 35 minutes south of Medicine Hat sit the otherworldly rock concretions known as Red Rock Coulee. They are basically in the middle of nowhere but if you’re looking for a nature or photography […]