Canosa di Puglia, Lagrasta Hypogea

To visit (2024) : contact Canusium foundation https://www.canusium.it/informazioni-e-contatti/ : they provide either guided tours or individual visits, call and ask them

See:

1. http://artpuglia.com/en/archaelogical-sites-and-parks/beni-culturali/ipogei-lagrasta-355.html