Glacial flood erratic boulder from the Copper Basin near Chilly Buttes, Custer County.
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Glacial erratic flood boulder from the Copper Basin, near Chilly Buttes, Custer County.


Earth Science Week
IGS has selected a recently published geologic map of one of Idaho's most wild areas as its map of the year in honor of Geologic Map Day, celebrated nationwide Oct. 17 as part of Earth Science Week.

The map shows the geology of the Big Creek drainage in the heart of the Frank Church - River of No Return Wilderness, which includes UI's remote Taylor Wilderness Research Station.

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