Temp

height = 63
lenght = 0
maxheight = 80

while lenght < 150 do
    while height < maxheight do
        turtle.dig()
        turtle.up()
        height = height+1
    end
    turtle.forward()
    lenght = lenght + 1
    while height >63 do
        turtle.dig()
        turtle.down()
        height = height-1
    end
    turtle.forward()
    lenght = lenght + 1
end