Changing paper documentation into digital one, guarantees easy access and transmission of information about archaeological sites and helps in creating new, more accurate data, which was not possible previously . An Archaeological Information System (abbreviation AIS) created from the digitized paper documentation should be easy put to use, enables quick and effective management of previously collected materials, and should allow the comparison of analysis, description of features and inventory of artifacts . Digitalization should also permit the visualization of the results in an understandable and interesting way. The documentation presented here comes from site Altdorf „Am Friedhof” in Germany and was made in traditional way. During excavation archaeologist discovered an early Celtic settlement, along with numerous deposits of daub, bone and pottery . All finds were documented in three dimensions, which allowed the use of GIS during interpretation of the results. This paper presents, point by point, the steps of computing a paper documentation to a digital one, and then creating an Archaeological Information System of the archaeological site.