loottunnel

--anti gravel function
local function digUntilEmpty()
	while turtle.detect() do
    	turtle.dig()
  	end
end

x = 0
d = 0

print("Enter length of tunnel:")
local d = tonumber(io.read())

while x < d do
	digUntilEmpty()
	turtle.digUp()
	turtle.digDown()
	turtle.forward()
	x = x + 1
end

x = 0

turtle.turnLeft()
turtle.turnLeft()

while x < d do
	turtle.forward()
	x = x + 1
end