What do the monkeys find behind the waterfall?

In the story, the monkeys discover a hidden cave behind the waterfall. Inside, they find a treasure trove of sparkling gems and ancient artifacts, which fills them with awe and excitement. The discovery leads to a sense of adventure and curiOSity, prompting them to explore further and uncover the cave's secrets. This moment symbolizes the rewards of exploration and the wonders that can lie beyond familiar boundaries.