Barcelona Time Traveller: Twelve Tales is a sci-fi history book written by a geologist and designed to amuse, teach and tease the reader into thinking about the immensity of time. On one level its approach is local, focusing on the city of Barcelona and the surrounding region of Catalonia, and merging the dramas of human history with those of natural disasters such as earthquakes, floods, droughts, plagues and volcanic eruptions. On another level it is global, viewing these events against the grand and astonishing backdrop of Earth evolution. It is written not only for those who have visited (or plan to visit) the city of Barcelona, but for anyone who likes stories. The Twelve Tales are stories about humans, of our place in the scheme of things, and of the mysteries of travelling through Deep Time.