The Columbarium of Pomponius Hylas is not by any means so well known as it deserves to be; for it is certainly one of the best preserved monuments of its kind, and it is with great pleasure that we are able to include in the present volume of the Papers of the School the interesting series of drawings by Mr. F. G. Newton. It is situated on the Via Latina, immediately before the Porta Latina of the Aurelian Wall, on the righthand side going out (Lanciani, Forma Urbis, 46), in the former Vigna Sassi: it is, however, best approached from the Via Appia, inasmuch as the custodian of the tomb of the Scipiones keeps the key.
Previous excavations in the sixteenth century are mentioned by Flaminio Vacca (Mem. 100, ed. Fea), but nothing of importance was found. The monument in question was excavated in 1831, permission having been granted at the end of January of that year: its discovery was announced in a letter of Campana's bearing date March 28 of that year (Atti del Camerlengato, Tit. iv. fasc. 1460). The columbarium was approached, not from the Via Latina, but from a branch road running S.E. and passing in front of the entrance, according to Campana (tav. i. A, frontispiece, and p. 301), while Lanciani shows pavement on the N.W. side, on which Campana, in the frontispiece, seems to represent the remains of another tomb, so that this pavement is probably modern.