
Once upon a time, there was a tall stack. It was so tall that it reached the sky! Every day, a little girl would come to the stack and use it. She would use a stick to climb up the stack, and sometimes she would even use rocks to build a path to climb higher and higher. 
The little girl would use her imagination and pretend the stack was a castle, and she was the brave princess who lived there. She would stack up the rocks, pretending they were walls around the castle, to keep her safe. 
When she was finished, the little girl would take one more look at her amazing tall stack. Then she'd climb down, heading back home. She knew that tomorrow she would come back and use the tall stack again!
