#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

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