Tunnel3

local tArgs = {...}

if #tArgs == 0 then
    print("Please input a length")
    length = 0
else
    length = tArgs[1]
end

print(length)

for i=1, length,1 do
    turtle.dig()
    turtle.digUp()
    turtle.digDown()
    turtle.up()
    turtle.turnLeft()
    turtle.dig()
    turtle.turnRight()
    turtle.turnRight()
    turtle.dig()
    turtle.down()
    turtle.dig()
    turtle.turnLeft()
    turtle.dig()
    turtle.turnLeft()
    turtle.dig()
    turtle.down()
    turtle.dig()
    turtle.turnRight()
    turtle.turnRight()
    turtle.dig()
    turtle.turnLeft()
    turtle.up()
    turtle.forward()
end

turtle.turnLeft()
turtle.turnLeft()

for i=1, length,1 do
    turtle.forward()
end

turtle.turnLeft()
turtle.turnLeft()