There are several widely known science organisations and industrial companies specialised in geophysics, geology, and underground construction in the Baltic Sea region, yet numerous underground laboratories in the region are not utilised to their full potential. Therefore, the Interreg Baltic Sea Region co-funded project Empowering Underground Laboratories Network Usage (EUL) was created as a tool to get more attention to the topic, and to continue the work done during the Baltic Sea Underground Innovation Network (BSUIN).