The Neverending Story (1984)

Audio problem: When Nighthob and Teeny are talking to the Rockbiter near the beginning of the film, Teeny says to Nighthob "This could be serious", then turns to Rockbiter and calls out his name. Watch Teeny's mouth as he calls out "Rockbiter". You will see a very blatant editing mistake as Teeny is not actually saying 'Rockbiter", but is saying the next line that follows. (00:16:40)

Rockbiter: They look like big, good, strong hands. Don't they? I always thought that's what they were. My little friends. The little man with his racing snail, the Nighthob, even the stupid bat. I couldn't hold on to them. The nothing pulled them right out of my hands. I failed.
Atreyu: No you didn't fail. I'm the one who was chosen to stop the nothing. But I lost the Auryn, I can't find my luck dragon, so I won't be able to get past the boundaries of Fantasia.
Rockbiter: Listen, the nothing will be here any minute. I will just sit here and let it take me away too. They look like good, strong hands. Don't they?

Trivia: After finishing the movie, the horse Artax was given to Noah Hathaway (Atreyu) as a gift.

Question: What is the meaning of the rock paintings that Atreyu finds, that seem to sum up all his adventures? (This is right before the fight with that black wolf-creature.)