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Journal entry · July 21, 1805
Missouri River above Great Falls, Gates of the Mountains — Patrick Gass: July 21, 1805
Patrick Gass · Missouri River above Great Falls, Gates of the Mountains · Thwaites Vol. Gass 1807 First Edition
The place today: Missouri River above Great Falls, Gates of the Mountains
morning; passed some middling high hills on the river, and
rocks of a red purple colour; also two small creeks one on
each side. There are a few pines on the hills. At noon our
course began to change more to the southwest again; the
wind blew very hard and some drops of rain fell. In the after-
noon we passed through a ridge, where the river is very nar-
row; and close above a large cluster of small islands, where
we had some difficulty to get along, the water being so much
separated. We went 15 miles and a half and encamped on the
south side, on a beautiful prairie bottom. One of our hunters
killed a fine deer.
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The NPS atlas for this night
right shore Missouri River, 5 mi south of town of Canyon Ferry, MT
NPS campsite reconstruction (Bergantino)
About 17.0 miles of travel mapped this day (NPS’s reconstruction of the course)
From the NPS Lewis and Clark National Historic Trail Park Atlas, mirrored here on September 21, 2026. This copy is not authoritative; NPS remains the system of record. About the mirror
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