The AstroArch is a tool for archaeoastronomical research, using the latest technologies in the field of Geographic Information Systems (GIS), Shuttle Radar Topography Mission (SRTM) and precise astronomical calculations based on Variations Seculaires des Orbites Planetaires (VSOP87). The author has successfully developed a unique software in the field of archĐ°eoastronomy. He has managed to bring the most important tools for calculating and analyzing prehistoric data under one roof. The program developed by him with intuitive user interface and operation brings the user the most important tools for analysis, such as realistic horizon profiles with impressive display depth and short calculation time, without the use of 3D techniques, generating relief maps with various color palettes, representation of the most important astronomical events, such as rising/setting of celestial bodies (sun, moon, planets, stars), ephemeris calculations, as well as orientation's diagrams and histograms.