This book collects data on biological risks in hypogea's, which is mainly based on shared experiences collected on Etruscan Tombs in Italy and on Ancient Tombs of the Baekje Dynasty in Republic of Korea. Based on these results, and on previous experiences in the field by further scholars, we give a contribution to preserve such fragile cultural heritage, suggesting preventive conservation activities, such as ecofriendly control technologies. This research work was supported by grants from the Italian Ministry Affairs and International Cooperation Program "Research of conservation environment and eco-friendly damage control of cultural heritage Korea and Italy" (PGR06686) and by the International Research & Development Program of the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (2019K1A3A1A25000303). These results have been presented in workshop, which was held in Tarquinia (12 November 2021) at the ending of the joint project.