The preparation for this ancient festival begins months in advance with the selection and cutting of wood in the forest. Participants, known as fallaires, are responsible for preparing the logs to ensure they dry properly and guarantee optimal burning during the night of the celebration.

In towns like Isil, in the Pallars Sobirà region, the logistics are particularly demanding due to the terrain. The route, without marked paths and with steep slopes, is reserved for experienced individuals who carry torches weighing between 20 and 50 kilos. Meanwhile, in Alins, the festival is open to the general public, with adapted routes starting from the Sant Quirc hermitage.

International recognition for this tradition arrived in 2015, when UNESCO declared the Falles, Haros, and Brandons as Intangible Cultural Heritage of Humanity. Since then, the number of municipalities joining the celebration has grown significantly, from the initial 63 to the current 94.