The proposal of this thesis lies in the mountain of Penteli. From ancient times until today, marble quarries operated in various locations. Today, the only active quarry is located in Dionysus. Initially, mining was done through outdoor exploitation, while in 1993 was implemented the cutting of the underground quarries.

The gradual removal of marble blocks, created inside the mountain empty cavities consisting of galleries and chambers. Specifically, two underground exploitations are identified. The proposal focuses on filling the empty cavity of the second exploitation, by creating infrastructure for receiving and processing analog printed material (books, newspapers, magazines, maps, etc.) for the conversion to digital, digital storage and archiving of material, which coexists with areas accessible to the public for the realization of a multitude of activities. We deem that mining activities in the second vault stop at this exact moment, while in the outdoor exploitation continue operating normally.

Regarding the first vault, marble mining has depleted due to discontinuities in its texture. The vault is left empty, however, making all the available levels accessible, allows the visitor to wander in as they wish. In addition, it is possible to accommodate temporary or (more) permanent uses such as festivals, theatrical performances, exhibitions.

The need to protect and maintain the information was always present, in order to ensure access not only in the present but also the future. Based on the archetype of the cave as a crypt, which is considered a safe place to store anything precious, even sacred, led us to the installation of the digital file in the vaults of the quarry. The process of marble extraction, that is the disclosure of the material, created the holes for the reception of the new "material", the accumulation of information, which are expecting their new extraction.