Introduction
Granite tower with a block on which a "skull" stone has been formed. This stone, which used to rock from side to side, kept its balance until it fell in the year 1996, when it was repositioned artificially.
We find ourselves in front of a unique granite structure. The surface erosion of the Ardenya-Cadiretes massif over thousands of years has left some hard parts exposed and therefore subject to both physical and chemical weathering (decomposition) phenomena.
It's these processes that start to shape these rock formations, often one on top of the other, fragmenting the rock through cracks and the most exposed edges and corners, which end up rounded off, as we can see (stone towers, dolmens and boulders are the granite macroforms).
At the same time, chemical weathering dissolves the stone forming windows, indentations and ribs on the surface of the rock, these are the microforms.
These different types of weathering form unique shapes in the rock, which can suggest familiar images like the Águila (Eagle) Stone. There are also abstract shapes like the Ullada Rock, or towers of blocks of stone piled one on top of the other, like the well-known Pedralta.