What is the symbolism of the daily ritual and carrying the ancestor rock? Chapter 18

There is symbolism in the daily ritual at the pool and of carrying the “ancestor rock” up the hill each day. Garvey and Edwin teach Cole about himself, about connecting with nature, and about understanding his emotions. These lessons are all manifested in various symbols and metaphors, including the meal of the hot dogs and the animal dances they perform in the evenings. Cole is gradually accepting these lessons and when he's alone on the island, he will continue the habits of going to the pool, carrying the ancestor rock, and the animal dances. He will also take every opportunity to provide special meals as celebrations.