Birch Creek valley in Lemhi County is a landscape where cultural heritage and ecological significance meet. Once traveled by the Lewis and Clark Expedition and long shaped by Native American communities who relied on its mountains and natural resources, the valley remains a living testament to human history. Today, it is the home for ranching families who have resided in the valley for five generations. It is a critical migration corridor linking Yellowstone to the Central Idaho wilderness, a vital wildlife and genetic “highway” that protects biodiversity, strengthens ecosystem resilience, and supports keystone species.