Conflicts - Internal and External

In the short story "By The Waters of Babylon" the main character John experiences conflicts that are both internal and external. Internal conflicts are those that arise within a character's mind, as in a mental or emotional struggle. An external conflict deals with a force acting against the protagonist. John faces internal conflict throughout the story. The arching internal conflict is attempting to understand what happened to the gods that destroyed their civilization, and its application to his current state. Another smaller example of an internal conflict is when he decides whether to obey his father and avoid the sacred places, or to go with his feelings. The external conflict is the battle against the physical forces around him that hinder his progress (character vs. nature), as he treks rivers, scales mountains, and wanders through the deserted remains of what was known as New York City. Specific examples of external conflict in the story is when John is chased by the dogs, or when he rafts across the "Ou-dis-son" river (obviously the Hudson River).
These are a the external and internal conflicts presented in this post-apocalyptic short story.