Yes, a lot of Popes are in the “first basement” of St. Peter’s. There are also lots of tiny chapels down there. The next level down is even better, it’s the remains of a pagan church and the spot where St. Peter’s remains are claimed to reside. You can see it all on the guided “Scavi Tour”. The people leading the tours are a fabulous font of information. You’ll see where pagan sacrifices were done, etc. Near the end you are standing on glass looking down at St. Peter’s resting spot. A lot of drainage was required to make it accessible and save it, the river is quite close by.
Thou shalt have no graven images before me.
Malarkey says the RCC.