Below the grounds of a property called Vigna Randanini lies an intriguing network of catacombs. These ancient tunnels offer a unique glimpse into history, yet are quite different from the larger and more famous Christian catacombs found elsewhere in Rome.
The Vigna Randanini catacombs are known for their compact size and limited accessibility. Unlike other historic burial sites in the city, these catacombs welcome only small groups, with a maximum of twelve visitors admitted at one time. Exploring this space requires a bit of preparation, as there is no electric lighting inside and guests must bring their own sources of light.
Source - https://en.wikipedia.org/wiki/Vigna_Randanini