Children will feel like part of the adventure as they help Diesel escape from a collapsed mine in the Thomas & Friends TrackMaster Tunnel Blast Set! When Diesel gets stuck inside a rocky tunnel, it'll take some kid-powered help to get him out! Children can send the motorized toy train around the tracks and into the tunnel, but what will they do when he gets stuck? Press down on the dynamite detonator to blast the rocks away and clear a path! Once the blasted boulders fall from the mouth of the tunnel, Diesel can continue his journey. Plus, the rocks can be easily reset so kids can relive this action-packed escape again and again!