Looking toward Helena's northern horizon, foothills and mountains seem to blend in a continuously forested belt separating the valley from the prairie farther north. This distant view is deceiving.
San Francisco Bay Area Biap Survey, 1975. https://siris-artinventories.si.edu/ipac20/ipac.jsp?&profile=ariall&source=~!siartinventories&uri=full=3100001~!142084~!0#focus ...
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