It looks like you're referring to a scene from "The Pearl," a novella by John Steinbeck. In the story, Kino, Juana, and their son Coyotito are hiding in a cave after Kino's pearl, which he hoped would bring them wealth and a better life, leads to tragedy and danger. They are fleeing from the threats and violence that arise as a result of Kino's newfound wealth.
If you have a specific question or need more details about this part of the story or its themes, feel free to ask!