The Shroud used to be preserved in a silver shrine in the Sainte Chapelle of Chambery (France). When the fire took place, a drop of molten metal fell on the sheet and pierced all the layers, destroying the fabric. This explains the symmetrical repetition of the peculiar triangular holes. There are two dark scorched creases, located on the sides of the figure, that were caused by the contact between the cloth and the overheated side of the shrine. The holes were repaired by the Poor Clare nuns of the convent of Chambery in 1534, who sewed patches on them. The patches are very visible because their weft is different from the fabric of the Shroud. They are also surrounded by darker areas, badly scorched by the heat. Afterwards, the nuns took care of stitching the Shroud on a piece of Holland cloth.