cleanup

local x = 0
while turtle.forward() do x = x + 1 end

turtle.turnRight()
turtle.turnRight()

for i = 1,x-30 do
    turtle.forward()
    turtle.digDown()
    turtle.digUp()
end

turtle.select(1)
turtle.turnRight()
turtle.turnRight()
turtle.down()
turtle.place()
turtle.up()
turtle.place()
turtle.up()
turtle.place()
turtle.down()
turtle.turnRight()
turtle.turnRight()


for i = 1,30 do
    turtle.forward()
end