Marble quarries of O Incio Curiosity · O Incio, Sarria, Lugo Image of O Incio, not of the place itself. The outcrops of bluish marble in the municipality are a geological rarity in Galicia and explain why the church of San Pedro Fiz was built with that material; the stone continued to be quarried for building and masonry in modern times. Photo: Lmbuga (Luis Miguel Bugallo Sánchez) (CC BY-SA 4.0) What to see and do in O Incio