Well, a cippus perusinus is a special kind of ancient Roman artifact that was often made out of stone. Think of it like a big rock with writing on it. The writing on the cippus perusinus would often be in Latin, which was the language that the Romans spoke.
These cippus perusinus artifacts were used for a few different things. Sometimes they were used to mark boundaries between different pieces of land or property. Other times they were used to commemorate important events or people in Roman history.
One thing that's really interesting about cippus perusinus artifacts is that they often have really intricate designs carved into them. These designs might show different gods or goddesses from the Roman pantheon, or they might show important symbols or scenes from Roman mythology.
Even though cippus perusinus artifacts were made a very long time ago, many of them still exist today. In fact, historians and archaeologists have found thousands of different cippus perusinus artifacts all over the world!