What was the Catacombs of Santissimi Pietro e Marcellino Rome?

The Catacombs of Santissimi Pietro e Marcellino, located in Rome, are ancient burial sites dating back to the 2nd century AD. They are named after Saints Peter and Marcellinus, early Christian martyrs. The catacombs feature intricate frescoes, tombs, and burial niches, reflecting early Christian art and beliefs. They serve as an important archaeological and historical site, providing insights into early Christian practices and the development of funerary traditions.