The Dearborn - Ancient Interstate Highway

The Dearborn - Ancient Interstate Highway (HM2MF5)

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N 47° 7.567', W 111° 54.386'

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A shortcut missed

...we passed the entrance of a considerable river on the Stard side about 80 yds wide being nearly as wide as the Missouri at that place... This handsome bold and clear stream we named in honour of Secretary of war calling it Dearborn's river. - Meriwether Lewis, July 18, 1805

The drainage of the Dearborn River provided a natural roadbed from the crest of the Continental Divide into the Northern Plains for the mountain nomadic India Tribes living west of the divide - this passage way was known to them as the "Road-to-the-Buffalo." It also provided a route from the Missouri River to the rivers on the Pacific side of the divide - thus the potential for a water route across the continent, a primary objective of the Corps of Discovery.
Lewis and Clark had been told of this route while wintering at Fort Mandan in 1804-1805, but were given sketchy details. On the night of July 17, 1805 the party camped downstream very near the present day Dearborn Inn. They failed to recognize the river's importance when they passed the mouth (the rest is lost in the reflection)
HM NumberHM2MF5
Marker ConditionNo reports yet
Date Added Wednesday, October 30th, 2019 at 11:01am PDT -07:00
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Locationbig map
UTM (WGS84 Datum)12T E 431250 N 5219577
Decimal Degrees47.12611667, -111.90643333
Degrees and Decimal MinutesN 47° 7.567', W 111° 54.386'
Degrees, Minutes and Seconds47° 7' 34.02" N, 111° 54' 23.16" W
Driving DirectionsGoogle Maps
Closest Postal AddressAt or near , ,
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