On this flat surface, very humid and favorable to snowfall, a period of ice known as the Upper Plistocene (2 million to 20,000 years ago) developed between the Torre plateau and the Curral Matins area and Vale do Conde to the north. This cap, about 80 meters high, fed the various valley glaciers that developed around it. Most of the Planalto da Torre is constituted by an erosion area, without any superficial deposit, and the ice transported the materials resulting from the alterations previous to the Glacier period.

All this granite that was visible, in contact with the fluctuations in daily and seasonal temperatures, fractures in parallel, forming slabs.