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High Idaho Batholith

Ecoregion in Rocky Mountains in ID, MT

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The wet, severely exposed, glaciated High Idaho Batholith contains jagged peaks, tarns, and rockland. It is often snowcapped and annual precipitation is greater than in nearby, lower ecoregions. Soils are very stony and have a cryic temperature regime. Above treeline, tundra, alpine grassland, meadows, and wetlands occur. Subalpine fir, lodgepole pine, whitebark pine, mountain hemlock, and alpine larch grow in rocky glacial cirques or on exposed sites as scattered trees, very open-canopied parklands, or krummholz.

— EPA

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