Back Basin Trail

Overview

Back Basin is the forested half of Norris Geyser Basin—a boardwalk loop through one of Yellowstone’s hottest, most acidic geothermal areas. Expect an easy stroll with minimal elevation (~100 feet) on wooden walkways, but note it’s generally not wheelchair or stroller accessible. The loop is typically 1.9–2.6 miles total depending on spurs and any temporary closures.

What you’ll see

This basin trades Porcelain’s wide-open moonscape for lodgepole pines and scattered thermal features created by a very active, fault-crossed, earthquake-prone system. You’ll pass vivid pools, mud pots, and fumaroles, often painted by heat-loving microbes. Highlights include emerald-green Emerald Spring; Cistern Spring (whose water level responds to Steamboat’s big shows); the infamous Porkchop Geyser’s blown-out crater from a 1989 steam explosion; recovering Minute Geyser; and, of course, Steamboat Geyser—the tallest active geyser on Earth. Minor splashes at Steamboat happen frequently; major eruptions are rare, powerful, and unpredictable.

Route tips

Start at the Norris Geyser Basin Museum/Bookstore. A clockwise loop gets you to Steamboat in about a quarter mile, then continues past Cistern, Vixen, Veteran, Minute, and Porkchop before bending back toward the museum. Wayfinding is straightforward, but expect occasional closures that force short detours or backtracking. Many visitors pair Back Basin with the shorter Porcelain Basin loop in the same visit.

Best time to go

May–October is most comfortable. Arrive early or after 6 pm to beat the parking crunch and tour-bus crowds. On cool mornings, drifting steam can obscure views and photography; by late morning and afternoon, you’ll trade clearer sightlines for more heat and sun exposure. Golden hour softens contrast on the pools and sinter terraces.

Logistics and safety

There’s a large parking area and restrooms at the trailhead. Bring water, a hat, and sun protection—shade is limited despite the trees. Stay on the boardwalk at all times; the crust is thin and the water is scalding. Pets aren’t allowed on boardwalks. If you’re out very early when it’s quiet, carrying bear spray is prudent. Be aware Steamboat’s major eruptions can throw debris; heed area signage and any temporary closures.

Bottom line

If you want Yellowstone’s geothermal variety in one concise loop—with a real chance of catching action at Steamboat—Back Basin delivers. It’s less open than Porcelain but often feels less hectic and more varied, with history (1988 fire scars, Porkchop’s explosion) written into the landscape.