Hoodoos

Overview

Don’t expect Bryce-style spires—the Hoodoos are a ghostly jumble of white-gray travertine blocks spilled below Terrace Mountain. They’re striking from the road and even better up close: angular boulders, open meadows, and long views toward Swan Lake Flats and Mt. Everts.

Why it’s unique

These rocks aren’t eroded pillars; they’re ancient hot-spring deposits (the same calcium carbonate that builds Mammoth Hot Springs). A long-ago collapse/landslide shed massive chunks downslope, leaving today’s maze-like boulder field.

How to visit

• Quick pullout stop: There are small roadside pullouts where you can hop out for photos and a short wander among the low rocks.
• Best hike (one-way): Park at the Bunsen Peak/Osprey Falls area and follow Glen Creek Trail to the signed Hoodoos junction, continuing to finish by Upper Terrace Drive at Mammoth Hot Springs. It’s mostly downhill and family-friendly if you stage a shuttle.
• Longer loop: Link Snow Pass for a roughly 7-mile circuit adding meadows, forest, and a steeper woodland section.

What you’ll see

• The boulder field: Stable low scrambles and fun nooks—keep it conservative on anything high or loose.
• Big views: Over Swan Lake Flats and across the Gardner River corridor.
• Flowers: Late spring into early summer, meadows pop with color.

Wildlife

Listen for the sharp “eep” of pikas in the rocks. Chipmunks and ground squirrels are common. In the meadows, you may encounter elk or bison—give them a wide berth. Raptors and ravens often ride the cliffside thermals.

Best time to visit

• Spring: Cooler temps, possible mud or lingering snow, great wildflowers, lighter crowds.
• Summer/fall: Dry trail and reliable footing; parking at nearby lots and pullouts is busier—go early or late.
• Winter: This corridor becomes a popular ski tour when snow-covered; always check current winter access and guidance.

Practicalities and tips

• No dedicated restroom at the Hoodoos; use Mammoth Hot Springs terraces or nearby picnic areas along the Mammoth–Norris road.
• Footing is uneven through the boulders—wear sturdy shoes. Sun can be intense; carry water and protection.
• If hiking one-way, arrange a second car or pickup. Near Upper Terrace, obey trail/boardwalks—thermal ground can be thin.

Worth it?

Absolutely if you like geology you can touch, mellow exploration, and big sky views without the crowds. It’s an underrated stop between Golden Gate and Mammoth that tells a Yellowstone story in plain sight.