The boy didn't know how he did it, but while he was in his semi-conscious state, he could crawl even further into the lower levels of the cave and hide in a safe place where the Dreads wouldn't take him so easily. Throughout his dizziness, he was sure that some of them actually came near him and nearly spotted the place that he hid, but it may be a hallucination due to blood loss and exhaustion.
Dean learned in that period that he kept hunting and getting severely injured for various times that the mind was one of the most dangerous things to deal with while in this kind of state. He learned how to discern what was real or not and just ignore it, but it never became easier, no matter how many times he needed to go through it.
'Alive again... I am glad... Sigh, that's really a relief.' He smiled, feeling that his body was way more energized than before. In truth, he felt awesome as if he just came out of the doctor after taking a miraculous medicine.
