The D42 takes you up to the Col de la Forclaz (1,157 m/3,800 ft).
You can arrive at the Col de la Forclaz via the D42.
mnli hypothesis: You can arrive at the Col de la Forclaz via the D42. premise: The D42 takes you up to the Col de la Forclaz (1,157 m/3,800 ft).