CC: Hole

length = math.min(90,math.max(5,...))
way = length
turtle.select(1)
while way>0 do
  while turtle.forward()==false do
    turtle.dig()
  end
  turtle.turnLeft()
  turtle.dig()
  turtle.turnRight()
  turtle.turnRight()
  turtle.dig()
  while turtle.up()==false do
    turtle.digUp()
  end
  turtle.dig()
  turtle.turnLeft()
  turtle.turnLeft()
  turtle.dig()
  turtle.down()
  turtle.turnRight()
  way=way-1
end
way = length
turtle.turnLeft()
turtle.turnLeft()
cobble = 0
turtle.select(1)
slot=1
while way>0 do
  if turtle.detectDown()==false then
    while slot<=16 do
      data=turtle.getItemDetail()
      if data.name=="minecraft:cobblestone" then
        turtle.placeDown()
        break
      else
        slot=slot+1
        turtle.select(slot)
      end
    end
  end
  while turtle.forward()==false do
    turtle.dig()
  end
  way=way-1
end