In Photos: Marking a Treaty by Riding With Native Americans

Austin Warrior, 11, and his sister Delores Warrior, 19 months, both from Pine Ridge reservation, are covered with burning sage smoke in Harrison, Nebraska. Riders and horses gather in a circle at dawn and dusk to be ‘smudged’

Beatrice Lookinghorse sits with two of her grandchildren in the backyard of her home on the Cheyenne River reservation in Green Grass

Angel Rose Lookinghorse sits with her cousins as she speaks to her brother Jayden on the Cheyenne River reservation in Green Grass