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    Arch Park

    5.0 (1 review)

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    Mammoth Hot Springs

    Mammoth Hot Springs

    4.6(37 reviews)
    6.0 km

    I was not sure about coming all the way out here because my original itinerary had me taking the…read moreroad on the other side of the park. However, I fortunately was informed by rangers that Bunsen peak (close to mammoth springs) was a better choice than the original trails I was gonna check out (they were still covered in snow!), so I came here because it's just minutes away from the Bunsen peak trailhead. I'm so glad I did! The formations of the hot spring are SO interesting, one of the coolest areas in the park in my opinion. The colors are lovely, and the path is very accessible (it's a big wooden boardwalk, like how the thumb geyser basin area is). There are a number of steps but parts of the path are flat/wheelchair accessible. There is sporadic parking throughout, and a lot of turnover so I got a spot reasonably easy. There are maps posted all throughout the area so you can walk the whole thing and not get lost. Overall, I would highly rec a visit to this area for anyone visiting Yellowstone, it's really cool and I've not seen any other natural springs before that are quite like it. 10/10!!!

    # WARNING: lotta snakes at this section of Yellowstone. And temperamental geothermal ground. Stay…read moreon the boardwalk. Keep your eyes peeled. + Thank goodness for sufficient well-maintained restrooms. ~ Initially when I saw over 5 ppl lined up at the single vault toilet at the Upper Terrace Lot (X77R+PP Mammoth, WY), my heart sank. Since I really needed to go, I drove 5min farther north to MHS' other bigger parking lot, and huzzah! Enough restrooms to go around for everyone! (X7FW+X7 Mammoth, WY). + And about the bullsnakes or gopher snakes fighting, I'm glad they were doing it on the thermal ground, not on the boardwalk. Don't bring your pets, and watch your kids. Pets have died wandering off the boardwalk, and humans have suffered 90%-body severe burns following suit. Lotta aptly named palette springs here. Nature is wondrous!

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    Arch Park - parks - Updated September 2026

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