Peperino Cimini Mountains, stone typical of Lazio widely used in Viterbo, has been used since the Paleolithic and then, gradually, from the Etruscans for their sarcophagi, by the Romans for public buildings, to become the main material in Medieval and Renaissance buildings. The lava stone was used for the construction of several neighborhoods in Viterbo and some of the most picturesque villages of Viterbo. The name comes from "piper", or pepper, and remember the look sometimes spotted by particles of biotite, like peppercorns. This stone, which comes from the cementation of volcanic materials ancient volcano Cimino, is exported to Canada, Japan and the Middle East. Linked by a millennial relationship with his land production, it is characterized by a dull roughness, and numerous tiny inclusions bright, crystals of various minerals and fragments of limestone reclaimed from the chimney of the volcano. Even if generated by volcanic processes, and then by fire, through which were subliminati detrital materials, with its ashy color and muted tones and somber bigi, it is connected by vocation shade, the caves, and water . is a stone that looks as composed of organic matter, the living, who draws nourishment from moisture. For this the Peperino is particularly suitable for the realization of architectures and objects inspired by the suggestions of aquatic environments. For centuries, it is employed as a "freestone", but also as a decorative stone. Concurs with the marble for his take on that, with time, a particular color from warm shades of brown and reddish much help to characterize the artifacts from the past. No less admirable is the sophistication achieved in many decorative applications made possible precisely by the assiduity of application and processing maintained and developed through the centuries. Assiduousness that is also an act of loyalty to their origins and who, despite everything, is still detectable in the passion with which workers and artisans are measured to produce new works by seeking new balances, new shapes, new and unusual harmonies solutions for the home and for the city. Paradoxically, the stone, most of all materials is the image of permanence and stability, thanks to its expressive power, can meet the needs of our time. Requiring lightness. True protagonist of our modern era, the lightness contrasts with the weight of the stone. Probably, it is precisely this contrast that has placed the current revaluation, primarily conceptual, Stone. In all this the Peperino, for its characteristics of materials and techniques, for its expressive connotations and symbolic, for the remote habit of its use, it has become a reference material. This is documented by recent projects that aim to renew the tradition through the adoption of new and existing language of art. A challenge brought forward by just one of the oldest stones of use.