Natural Road is a documentary about the beginning, rise and fall of railroads in Brazil and the passion for railroads through the history of the Estrada de Ferro Bahia e Minas. Adélia Prado, Milton Nascimento and Fernando Brant, as well as people from the places where the train passed, talk about the theme. Milton and Brant are the authors of the song "Ponta de Areia", which tells this story.
