Among other things, the passage is a reminder of how young Lewis was to be carrying so heavy a burden of command. Physically tired and emotionally exhausted after the tension of the past few days, he was in what is still today one of the most remote places on the continent, with only eighteen enlisted men, Drouillard, and four Indians as companions. He had reached the source of the Missouri River, but he still had those tremendous mountains to cross and was dependent on the whims of Cameahwait and his people to make that crossing.

