The history and ecology of the Skeena River region in the Pacific Northwest is characterized by a complex landscape of interwoven phenomena, driven by biophysical and cultural changes over millennia. Combining archaeological, botanical, and historical research, together with first-hand accounts provided by Gitselasu knowledge holders, this book critically assesses and debunks settler colonial narratives of a wild and untouched landscape in northwestern British Columbia. By focusing on people-plant interactions and landscape changes through time, Silm Da'axk offers insights into the diverse and bustling territories of Gitselasu Ts'msyen. Augmenting these discussions is a vividly illustrated guide to the plants that grow in the region. From the middle Skeena River to the coast, along creek beds and into alpine meadows, Gitselasu continue to thrive, representing one of the oldest and longest enduring Ts'msyen Nations. Tapping into historical knowledge of the laws (adawx) surrounding plant use and territory ownership, this book highlights the intricate relationships that exist among people, places, and plants.