Based on the central theme " Underground space at the heart of transitions ", this congress is an opportunity for all underground promoters and actors (decision-makers, project owners, developers, urban planners, infrastructure managers, designers, builders, suppliers, etc.) to share their experiences and projects and to contribute to the following themes :

Thème A - The development of underground space to meet new needs and facilitate transitions.
Thème B - Changes in performance requirements, project management and the design of underground spaces and structures.
Thème C - Feedback, technological innovations, achieving the objective of carbon neutrality in underground construction.
Thème D - Strategies for establishing underground structures.

The conferences and exhibition will be held at the Palais des Congrès (Paris) from October 2 to 4, 2023, and the site visits, which will be defined later, will take place on October 5 and 6, 2023.