Snake River Plain
Snake River Plain is a broad, arid volcanic corridor across southern Idaho, characterized by salt lakes, sandy flats, and desert-steppe ecosystems.
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Geography
| Continent | North America |
|---|---|
| Region | Intermountain West |
| Subregion | Pacific Northwest |
| Country | United States |
| State | Idaho |
| Timezone | AmericaBoise |
| Latitude | 43.5 |
| Longitude | -114 |
| Maps |
12:51 PM LOCAL TIMESnake River Plain is a geologically young volcanic depression that stretches across southern Idaho from eastern Oregon to western Wyoming. It was formed by repeated rhyolite and basalt eruptions, shaping features like Hagerman Valley, Magic Valley, and Downtown Boise; the region rests at roughly 1,200–1,800 meters elevation. The Plain’s arid climate supports sagebrush steppe, large saline lakes — like Lake Idaho and Summer Lake — and wide, windswept flats. It’s a key corridor for migratory birds, trout- and bass-filled rivers (notably the Snake River), and human settlements and agriculture that date back thousands of years. Popular activities include flying and bait fishing, wind surfing and boating on salt lakes, and exploring wide-open landscapes suited to long drives or dispersed camping. Advise travelers to prepare for temperature swings, low precipitation, and remote facilities — but also for striking desert views, fossil-hunting opportunities, and access to both western city hubs and rural frontier areas.
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