This sarcophagus is made of Carrara marble and was discovered in 1800 as Saint-Irénée.
On this side of the sarcophagus, a Bacchante is playing a tambourine and is looking back at Pan. Note the snake coming out of the basket, just below Pan.
The sarcophagus was produced in a workshop in Rome in the early third century A.D.
Information from a sign in the museum.