One of the characteristic plants of La Cerdanya is the box tree, which is actually a tree and not a shrub, although it is usually found in bush form. But if the terrain is the right one and we wait enough years, it reaches the tree form, as we can see with the box tree of the Sanctuary of Boscalt , in the Baridà (Cava, Alt Urgell). According to legend, if someone wants to hurt him, a lightning will fall from the sky to punish them.