I would choose to go out and explore the forest in order to find the best way to follow the path I was originally traveling. After all, I'm not sure about that cave, as I don't know if it really exist some animal that has already claimed it, perhaps a bear that may be on its way. I would look for some kind of food during the task, perhaps some wild fruit that could give me energy. And it would definitely continue, because it's not safe to be in the cave and just as I managed to survive that night, I can do it the next one.