Spelunking Villager

They are black with a head lamp on his head.  He spawn when there is a cave in the village.  His house covers up the mine and has a back room where you enter the mine.  His trades start out as mining tools but gradualy start to ease into items that you get in the mine like coal, iron, redstone ext.  This would fit the thme of the new and upcomming cliffs and caves update very well.  His house could have a bed, a crafting table, a furnace, and a chest in it.  His role would be to mine in caves and gather cave resorces.  He could also have trades relating with new ores and gems comming in the caves and cliffs update.  They could also be called archeologist villagers?  Just a thought.