Holding up a lit torch made of dry branches, a teenage girl, covered with patches of deer skin, helps her companion, a young boy of about the same age, descend on the smooth rocks leading to the entrance of a cave. As he jumps from the edge of the last rock, the boy utters a wild howl, feigning fear of the darkness awaiting ahead, while she laughs mockingly, pulling him forcefully by the arm. The young man grabs a bag of dry fibers hanging from his shoulder and walks into the