Pesky was pawing at something. Maya leaned over to take a closer look. At the edge of a patch of wildflowers there was a hard, round bump. It was covered in dirt, but it didn't look like a plant. Was it just a rock? Or was something buried there? When five friends set off to solve the mystery of a "barking" tree, they unearth a remnant of a famous battleship built in the 1600s The island they live on is home to a whole lot of history and, it turns...