There's a whole world to discover under the ground beneath our feet, from plants growing and animals taking shelter to hidden tunnels and buried treasure! Hold a light behind the pages to discover how we make use of resources and space underground, uncovering ancient history, mining for useful miner...

There's a whole world to discover under the ground beneath our feet, from plants growing and animals taking shelter to hidden tunnels and buried treasure! Hold a light behind the pages to discover how we make use of resources and space underground, uncovering ancient history, mining for useful minerals, building space-saving parking lots and huge shopping malls, and creating transportation networks and storage vaults.