From publisher blurb: The Cavern of Calamity, a 2nd level adventure for The Dales of The Great Wyrm Lake Roleplaying Game, which introduces the Gamemaster and Players to a world of sword and sorcery fantasy. The Cavern of Calamity uses the D10 Pentra System, of which only a 10-sided die is needed to play this RPG adventure. Pick up your sword and shield, prepare your Wyrm Magic, concentrate on your Psi, and enter the The Dales of The Great Wyrm Lake.