In that dark place he just wanted to prove to his father that he was not a child who was trying, if he could become an outstanding knight with the courage he had, of course he could help his now-old father, he just wanted to be able to make him not bother with the materials he needed.
He held his own hand to brace himself.
When he was walking up the mountain with big trees around him, he saw a bad thing approaching, now he was hiding behind a big tree so that the mountain monster with the stone body, and the big body with one horn on it, the fur was white and his body that almost matched the whiteness of the snow; he had other similarities with the snow. He could make people who saw him experience such a fright that it froze their bodies
Dean had to hide so as not to have a bad thing happen.