Norris Geyser Basin Steam Season — Yellowstone
Norris Geyser Basin is Yellowstone's hottest, oldest, and most dynamic geothermal area — a desolate grey-white landscape of steaming vents, pools, and geysers so acidic and hot that almost nothing lives in them, the ground itself too warm to stand on in many places and the air sharp with hydrogen sulphide. Steamboat Geyser, the world's tallest active geyser, erupts here unpredictably and rarely — sometimes years apart — to heights exceeding 90 metres, making each eruption a genuine once-in-a-decade event for most visitors. The "Norris Disturbance" that occurs annually in late summer — when the basin's hydrothermal system temporarily changes behaviour, with previously quiet pools boiling suddenly and colours changing overnight — adds an element of genuine geological drama to an already extraordinary landscape.
About this spectacle
Norris Geyser Basin greets visitors with a stark, otherworldly panorama of grey-white silica flats, fuming vents, and vivid acidic pools stretching across a landscape that smells sharply of hydrogen sulphide. The ground radiates heat underfoot, and wisps of steam drift continuously from hundreds of features. Boardwalks thread through both the Back Basin and Porcelain Basin, bringing you close enough to feel the thermal warmth and hear the hiss and gurgle of superheated water just below the surface. Steamboat Geyser dominates the basin's reputation — its rare eruptions tower over 90 metres and shake the earth with a roar audible from afar. Even without a major eruption, the basin changes character constantly: pools shift colour overnight, previously dormant vents suddenly roar to life, and the annual late-summer Norris Disturbance reshuffles the entire hydrothermal system in visible, dramatic ways. Photographers find endless compositions in steam plumes catching morning light, mineral-stained terraces, and the eerie stillness of near-sterile acid pools.
When to go
May — Oct, peak Jul — Sep
Getting there
Nearest airport: JAC. Nearest city: Bozeman.
Booking options
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