The Bitterroot range is one of the ranges of the Northern Rockies. It forms part of the border between Idaho and Montana. The Bitterroot range stretches for more than 100 miles from north to south. Many of the range's jagged peaches reach heights of more than 9,000 feet. The peaks and valleys were carved out of the granite bedrock by Ice Age glaciers.




  November 1804
  February 1805
  April 1805
  May 1805
  August 1805
  September 1805
  January 1806
Sacagawea's Journey with the Corps of Discovery

Artist's rendering of Sacagawea crossing the Bitterroot Mountain Range in September 1805.
September 1805
Crossing the Bitterroot Range in September 1805, the expedition fought sudden snow and rough terrain for 11 days. Food ran so low the group had to kill and eat three colts.

Sacagawea is not mentioned in any of the journal entries during this time. She was the only woman traveling with the group, and she crossed the stark Bitterroots when she was only about 17 years old, enduring lethal cold and negotiating treacherous trails while carrying her seven-month-old son. It is surprising that her feat is not mentioned in the expedition journals.

In Their Own Words:
"I have been wet and as cold in every part as I ever was in my life, indeed I was at one time fearfull [sic.] my feet would freeze."
— William Clark
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