Joy in the Morning by James Hinkle Book Resume:
Topa and Cancha are boys who live in the village of Huari in the shadow of the Andes Mountains of South America. As Topa walks along a path outside the village, he encounters a large stone that has the shape of a bear. The stone looks so realistic that Topa finds it alarming. He senses that the stone holds a message of importance to his people, the Inca. Topa wants his friend to see the strange stone, so they sneak out of the village and into the night where danger lurks at every turn. Beasts of the night, such as the mighty puma, put the boys' lives in peril. The boys learn that the "bear stone" holds the key to their destiny. With courage they must devise a bold plan to save the treasure of their people!