WizKids 4D Settings: Stone Bridge - Rules of Play says:
Bring your adventure to life with WizKids 4D Settings: Stone Bridge. These scenes offer more than just pre-painted miniatures for you, they offer exciting new play experiences and storytelling narratives. The Stone Bridge comes with a three-piece bridge, risers, two figures, and over 30 pieces of accessories that will allow you to configure your bridge to fit your needs. What adventures await your campaign? A deadly encounter with a troll? An escape from a pursuing rival army? Or possibly just another landmark along the way to the next destination.