Pedras Parideiras: Top Tours & Activities
Top Attractions in Aveiro District
About Pedras Parideiras
Stones Parideiras are a rare geological phenomenon, a type of stones that sprout of a mother rock, a nodular block of granite origin with 1000 x 600 m, hence they are called Parideiras. The nodules of 1 to 12 cm in diameter with discoid and biconvex forms are composed by the same mineralogical elements of granite, the outer layer is composed of biotite and the inner one has a nucleus of quartz and feldspar potassium.