this place is indeed closed. there are large construction fences around it. It's a desolate mess now. in mid-September we stood in the place on the Col itself, on the P-place behind the "Monument en homage aux démineurs". ordinary P, is not indicated as a camper place, but there is also no prohibition sign. We were there overnight with 5 campers. During the day beautiful walk to the top but also down to the Cascades du Rummel.