Early Christian barrel-vaulted burial chamber with porch; on the weathered surface of the stucco of the wall opposite to the entrance traces of red-painted dipinti of Christian character: two or three Christian crosses with flaring arms and a christogram. Below the vertical arm of one of these crosses the soteriological letters Alpha and Omega are suspended and further below with large letters the Christian acronym ΧΜΓ (Christon Maria genna = ‘Mary gives birth to Christ’); birds.