Rambles in Rome / An Archæological and Historical Guide to the Museums, Galleries, Villas, Churches, and Antiquities of Rome and the Campagna

by S. Russell Forbes

ALTAR OF APOLLO RHAMNUSII (5),

called the Altar of Apollo of the Blackthorn. Erected in commemoration of the blackthorn tree that sprang from the staff of Romulus. The large tufa blocks of the altar, and in front of it the Temple of Roma Quadrata, still remain, and by their side the Porta Carmenta.