The Rover C II, advancement of  Rover C and  Grailfinder is based on an electromagnetic pulse method which can be used to select anomalies in the target area. It also includes a geo-electrical measuring method to detect all kind of cavities. Here some examples of objects and structures which can be detected:  boxes and chests
  gold and silver objects
  grave chambers, sarcophaguses and tombs
  bunker, galleries, caves and tunnels

As a combination of two devices the Rover C II offers a graphical ground scan and a geo-electrical measurement. Besides the standard software there is additionally the  Super Sensor connectable. In combination with the professional software  Visualizer 3D there are graphical measurements in high resolution possible, which offer valuable clues to the depth and size of located objects.