The mountain of Montserrat used to be part of a delta in the Terciary Period. Sediments came from a mountain range located on what today is the Mediterranean Sea and were deposited on a narrow shallow sea that reached the Atlantic Ocean. From those times are the conglomerate rocks present in the area which are very resistant and that form those familiar monoliths that Gaudi perhaps evoked in his famous knights of La Pedrera's chimney stacks. In between the monoliths there are fractures of clay continuously altered by erosion thus the isolation of the big solid structures and the numerous caves. I mention all this because I was always amazed when some geology teacher back in my childhood days said: "You see these layers here, well, this region was once under the sea" - and you wondered, "how come!, we are miles away!". So this post goes to all those would-be scientists who still feel nostalgic about long gone field excursions.
