By Tommaso Di Gioacchino, Nadine Steffens
The video is a short travel vlog where we show a part of the geology that is possible to find in Arouca, Portugal, where an Unesco Geopark has been established! Special attention has been given to the search of pedras parideiras, rocks that can give birth to other rocks, very popular in the native culture. These are a granite with sigmoidal biotitic nodules of magmatic origin! The phenomenon is extremely rare and still surrounded by some mystery.