Movile Cave is near Mangalia in Romania. The cave is closed to the public. There is a kind of entrance, but it is locked. Only the words written on the stone give away that this is the actual entrance. ‘Danger, toxic fumes’ or something like that. Not worth the trip, although it is a kind of sacred ground, makes you wonder being on top of such a special place. (Nelleke103, thg 7 2019)