Norris Back Basin, Yellowstone: One of Yellowstone’s Hottest, Most

Norris Back Basin in Yellowstone National Park showcases steaming vents and vivid colored pools among the geothermal landscape.

Steam shrouds the white mineral plain of Porcelain Basin, while Back Basin vents hiss in the distance. This is a hydrothermal basin born of Yellowstone's active caldera plumbing, where a shallow magma chamber drives boiling springs and acid-altered rock colors. The 2.5-mile boardwalk loop threads between the basins, offering close-up views of one of Yellowstone's hottest and most dynamic thermal areas.

Access & viewing

GPS Coordinates: 44.7258° N, 110.7097° W
Accessibility: Boardwalks generally accessible; some sections with inclines; wheelchair accessible in most areas

Conditions & safety

Permits Required: 0

Planning advice

Nearby Attractions: Porcelain Basin, Back Basin, Norris' other hydrothermal zones
Nearby Facilities: Parking, vault toilets, water spigots, interpretive signs
Best Time To Visit: Late spring (May–June) and early fall (September–October) offer lower crowds; morning light best for illuminating steam and color; avoid midday in summer due to glare and crowds.
Tips Advice: Arrive early to grab a parking spot. Norris Geyser Basin’s lot holds 143 spaces, including 17 for oversize vehicles, and it fills up quickly in peak season. If it’s full, overflow parking may be found along Grand Loop Road.
Stay on the designated boardwalks and trails. The ground around boiling pools and vents is extremely hot and thin; stepping off can cause severe burns and damage the delicate crust.
Dress for variable weather and rugged footing. Wear sturdy, closed-toe shoes, bring water, and layer clothing for spring through fall; a hat and sunscreen are smart on bright days.
Map out the loops. The Porcelain Basin loop is about 0.75 miles (1.2 km); the Back Basin loop is about 1.5 miles (2.4 km). If you walk both, plan on roughly 3 miles (4.8 km) of hiking.
Wildlife awareness. Bear spray is a prudent precaution; travel with a companion if possible and keep a safe distance from wildlife. Never approach geysers or disturb the ground.
Stay connected offline. Cell service is spotty in this area—download offline maps before you go so you can navigate without data.
Insider Tips: Arrive early for parking
Stay on boardwalks
Watch for steam and hot ground
Weather can change quickly

More details

Park Area: Yellowstone National Park
Family Friendly Notes: Keep children close; hold hands near rails; avoid stepping off boardwalk; hot ground dangers
Attraction Type: Hydrothermal Basin / Geyser Basin
Elevation Feet: 7400
Distance From Entrance: Varies
Accessibility Level: Generally accessible via extensive wooden boardwalks; some sections have inclines or uneven surfaces; wheelchair access good in most areas
How To Get There: Drive to Norris Geyser Basin via Grand Loop Road; follow signs to Porcelain Basin and Back Basin; boardwalk loops are clearly marked and interconnected.
Parking Availability: Paved parking lots exist but fill rapidly; arrive early morning or late afternoon
Road Type: Paved access road; extensive wooden boardwalks
Seasonal Access: Roads to Norris open by the third Friday in April; Norris access subject to seasonal closures; best May–June and Sep–Oct; peak season in July–August
Entry Fees: Varies
Main Features: Porcelain Basin, Back Basin; central hydrothermal activity; dense steam and mineral deposits; extensive boardwalk system
What Youll See: Steam plumes over white mineral terraces, boiling springs and fumaroles, vivid mineral staining, and a network of wooden boardwalks weaving through the heated landscape
Unique Characteristics: One of Yellowstone's hottest and most dynamic hydrothermal basins; highly acidic fluids alter rock; Steamboat Geyser eruption cycles and basin-wide shifts characterize its behavior
Safety Considerations: Acidic hot springs and fumaroles pose burn risks; hydrogen sulfide gas present; boiling water and thin ground; keep to marked paths and rails; wet boardwalks can be slippery; bear spray recommended in Yellowstone
Best Viewpoints: Overlooks at Porcelain Basin and Back Basin; key junctions along the main loop offer varied geological angles
Photo Opportunities: Steam contrasts with pale rock and mineral crust; early morning light enhances color; long shadows in late day reveal texture
Photography Spots: Porcelain Basin overlook; Back Basin corridors; steam plumes against mineral textures
Stargazing Quality: Excellent on clear nights; minimal light pollution away from parking areas
Sunrise Sunset Quality: Alpenglow possible on clear mornings
Visitor Center Present: 0
Restrooms Available: 1
Restroom Type: Vault toilets
Picnic Areas: 0
Interpretive Signs: 1
Cell Service: Unreliable
Water Available: 1
Guided Tours Available: 0
Trailheads Here: Primary boardwalk loop ~2.5 miles (4 km)
Connecting Trails: Boardwalks connect Porcelain Basin and Back Basin; short viewing spur trails
Nearby Services: Parking, vault toilets, water spigots, interpretive signs
Common Wildlife: Bison, elk, and pronghorn frequent surrounding meadows and roads
Best Wildlife Times: Evenings and dawn along meadows and park roads
Fall Colors Peak: Early October
Geological Formation Type: Hydrothermal basin / geyser basin within an active caldera; acidic fluids alter rock
Scientific Interest: Extremophile thermophiles; visible microbial mats; dynamic hydrothermal activity tied to caldera processes
Road Opening Dates: Third Friday in April
Snow Lingering: Varies
Winter Access: Limited; boardwalks may be icy; not fully accessible in winter
Best Visit Times: May–June and Sep–Oct; mornings preferred
Best Season: Late spring and early fall
Weather Patterns: Foggy mornings; strong sun in summer; afternoon storms possible
Peak Fill Times: Varies
Busiest Season: July and August
Fishing Nearby: 0
Swimming Allowed: 0
Boating Allowed: 0
Climbing Areas: 0
Review Summary: Norris Basin presents a concentrated dose of steam, color, and heat in a compact circuit; crowds rise in peak season, so plan for parking and safety; the science‑rich landscape rewards patient observation and careful pacing.

Location

Photos

Norris Back Basin pool glows turquoise as steam drifts above a barren rim, surrounded by pine forest in Yellowstone National Park.

Norris Back Basin steam vents rise from the rocky ground in Yellowstone National Park under a blue sky.

Norris Back Basin in Yellowstone National Park with steaming vents and barren geothermal ground.

Norris Back Basin geothermal area at Yellowstone National Park with steam vents and a milky blue pool.

Frequently asked questions

Do I really need to arrive before 7am to get parking?

Yes—the lots fill quickly; arriving early is essential to secure a space; if you miss it, plan for late afternoon visits.

Is the Norris Geyser Basin loop worth it for a quick visit?

Yes—the 2.5-mile boardwalk visits Porcelain Basin and Back Basin, where you’ll see steam, mineral deposits, and dramatic color changes.

Is it safe for families with kids?

Yes, but keep children close and stay on the marked boardwalks; the ground around thermal features is thin and hot, so supervise at all times.

Is cell service reliable in Norris Basin?

No—cell service is unreliable; download maps and plan offline before you arrive.

What about the heat and fumes—do I need special precautions?

Yes—hydrothermal fluids are highly acidic; avoid touching water or mud pots; stay behind railings and on the boardwalk; bear spray is recommended in Yellowstone.