dK983nnK

function DigTunnel(Int)
  torch = 0
  while Int > 0 do
   if turtle.detectUp() then
    turtle.digUp()
   end
   if turtle.detectDown() then
    turtle.digDown()
   end
   while turtle.detect() do
    turtle.dig()
    sleep(0.5)
   end
   if torch == 8 then
    turtle.select(2)
    turtle.placeDown()
    torch = 0
   end
   turtle.forward()
   torch = torch + 1
   Int = Int - 1
 end
end

DigTunnel(48)
turtle.turnRight()
DigTunnel(3)
turtle.turnRight()
DigTunnel(48)