The renowned sliding door of the Aven de Noel, was recently enhanced with a mobile grid.
As some visitors were leaving the sliding door open during their visit, the opening above the P120 pitch was remaining dangerous for animals or peoples passing by.
This new grid now allows :
1- To leave the door open if you like to feel the draft during your descent or your ascension.
Or
2- To try to start a kind of semi ventilation of the cavity if you open it the day before your visit to allow the CO2 to déconfine may be a little the Aven or the pitch.
Thanks to handle it with care
.
