"Stone Age" is Chaubin"s second book, following 2011"s "CCCP: Cosmic Communist Constructions Photographed," a stylish tome that presented seven years" worth of photography and research into the architecture of the Soviet Union. For his new book, however, he armed himself with a traditional large-format view camera and travelled to the United Kingdom, France, Spain, Germany, the Baltics and beyond, photographing more than 200 castles built between the 10th and 15th centuries.