Miner

function hole(Z)
    for i = 1 , Z do
        turtle.digDown()
        turtle.down()
    end

    for i = 1 , Z do
        turtle.up()
    end

end

function R180()
    turtle.turnRight()
    turtle.forward()
    turtle.turnRight()
    turtle.forward()
end

function L180()
    turtle.turnLeft()
    turtle.forward()
    turtle.turnLeft()
    turtle.forward()
end


function goto(X,Y,Z)

    for j = 1 , Y do
        for i = 1 , X do
            hole(Z)
            turtle.forward()
        end

        R180()

        for i = 1 , X do
            hole(Z)
            turtle.forward()
        end

        L180()
    end

end


Init_X = 0
Init_Y = 0

turtle.select(16)
turtle.refuel()

goto(10,5,40)