This is a YouTube link for an excellent video on Huichol Yarn Painting.
From YouTube’s description:
The Huichol (WE-chol) tribe of Mexico creates stunning art with beads and yarn. In this documentary, you see how this unique art is created and learn about their ancient culture. Isabel Jordan explains the art and culture of this tribe. She spent over 25 years getting to know many Huichol families through visits to their remote mountain villages in central Pacific Mexico northwest of Puerto Vallarta and west of Guadalajara.