Story of the mound Learn More Join and Donate Upcoming Events Grassland Research Grant ProgramSpirit Mound Trust announces The Grassland Research Grant Program with grants up to $1500. Learn More Restoring the PrairieLearn about and help with prairie restoration at the mound! Learn More Visit spirit mound Spirit Mound is located 5 miles north of Vermillion, SD along Highway 19. Click here for a map of the trail leading to the top of Spirit Mound.