When we left off last time Meriwether Lewis had just looked over the crest of the largest mountain range he had ever seen (or summited), hoping to see the Columbia River, and an easy path to the Pacific Ocean. Instead, there were mountains as far as the eye could see. 

Canoes were useless now, and the Corps of Discovery would need horses. It was Sacagawea's moment. 

Show notes and National Park Service resources at NationalParkPodcast.com/corps-of-discovery-2.