describe what Edwin has Cole do to meet his ancestors and why does he do this

In Chapter Eighteen, Edwin takes Cole to meet his “ancestors.” The exercise involves taking a large “ancestor rock” representing the ancestors up a slope, and Edwin tells Cole how these ancestors have many lessons to teach him.

Just as Cole must accept the numbness caused by the freezing water, he must accept his own anger. Anger is also personified through the “ancestor rock” that Cole must carry up the hill each day. On the way up, the rock represents the value of his own life and those of his ancestors, but when he releases it downwards at the end of the climb, Edwin tells him to imagine it representing his anger as he lets it go. These symbolic representations draw heavily on Indian traditions but also form a central part of circle justice.