The cavity is found at the base of the upper crag of the Mont-Roig range, on the same stratification plane on which the cova del Tabac is located.

To reach it, follow the path that from the Camarasa reservoir climbs up to the cova del Tabac. When the path reaches the point where a small rise must be climbed to continue towards the cova del Tabac and where the entrance of that cave is already visible, continue onwards along the trail, which runs fairly flat with small variations in gradient. After a few hundred metres we will see an enormous joint in the wall of the Mont-Roig; it begins at the upper part of the massif and descends to the base of the upper crag. At this point is found the cova de l'Il·luminat, heavily hidden by vegetation.