Research, exploration and study of the underground man-made environments: from ancient times to today
Study, exploration and research of artificial underground environment, protection, conservation, improvement and implementation for sightseeing.
Studies ranging from caving in urban places, architecture, geology, history.
The work is performed in hidden tunnels and galleries under castles and churches, crypts, bunkers, mines and quarries, aqueducts, wells and tanks, to discover the secrets and mysteries of the past.
The studies are disseminated through publications, videos, documentaries, radio, television, conferences, internet, ect.