Magic escape game in Les Arcs 1800: the curse of the condemned passage

Break through the blizzard of Les Arcs 1800 to thwart a curse!

An unknown spell has completely sealed off access to a mysterious underground passage. This is a major obstacle for the spirits of the families who escaped and who will no longer be able to return to the afterlife...

It seems that access to the latter is hidden in Les Arcs 1800 and that you have been chosen to find it... Dress warmly and take your courage in both mittens, you have two hours before it closes forever! 

Armed with your smartphone, go to each of the families indicated. You will have to guess 4 code words within the allotted time, which will allow you to find the location of the passage. It will also be necessary to collect and link key clues to find THE code word that will validate your visit to each family.