turtle.refuel()

while turtle.detectDown() do
	if turtle.detect == true then
		turtle.dig()
		turtle.digUp()
		turtle.forward()
	else
		turtle.turnLeft()
		turtle.dig()
		turtle.digUp()
		turtle.forward()
	else
		turtle.turnRight()
		turtle.forward()
		turtle.dig()
		turtle.digUp()
		turtle.forward()
	end
end