Cube of Trevalia (Trevalian Magic, Book 1)

Fascinated with the strange artifact found by his grandpa when he had dug a well many years ago, Danny can't stay away. Like his father, he has an insatiable curiosity about the cube. He feels drawn to the object, wandering out to his uncle Ethan's converted barn every chance he gets. The whole family are about to find out what the cube is for...