#stone_pit__stonepit__pit  a surface excavation for extracting stone or slate: "a British term for `quarry' is `stone pit'"
  supertype:  hole_in_the_ground__excavation  a hole in the ground made by excavating
  subtype:  chalkpit__chalk_pit__chalkpit  a quarry for chalk
  subtype:  gravel_pit  a quarry for gravel
  subtype:  trou-de-loup  a sloping pit with a stake in the middle used as an obstacle to the enemy

No statement uses or specializes stone_pit; click here to add one.