Yosemite fortune
(Book)

The Campground Kids begin their next journey in Yosemite National Park. Their seemingly relaxing trip gets turned upside down when they learn that treasure has been hidden somewhere in the park--over one million in gold and precious gems. When the kids discover that their long-lost great-uncle is involved, they insist on joining the hunt. As the family begins their adventure, they run into twin brothers, Brody and Brock, and their father. While Brody seems friendly to the crew, Brock and his menacing father are determined to locate the treasure and will resort to anything to find it!