The "All Nations Pow-wow" that the grandfather and grandson Shane are going to is actually the Gathering of Nations Pow-wow that takes place annually in April in Albuquerque, New Mexico.
When Shane is first standing with Mae Little Wounded in front of her house, May has both hands out admiring the ring, then in the next shot a second later, May only has one hand out, which is held by Shane's hand.
Shane: Shall I tell you stories? Shall I tell you how it was told by the old ones to my grandfather's grandfather long ago? This is how it was told to me. Let me tell you, and you remember to pass it down, for this is how it happened long ago.