In Roman mythology, the Palus Caprae was the place where Romulus underwent ascension into godhood.
The marsh was fed by a stream called Petronia Amnis,[3][4] but by the Augustan period it had disappeared or been drained.
[5] The Palus Caprae was in the small basin where the Pantheon was later built,[6] west of the Altar of Mars supposed to have been established by Numa Pompilius, Romulus's successor.
[9] On the Nones of Quinctilis (July 7), Romulus was reviewing the army on the Campus Martius near the Palus Caprae.
Suddenly a storm broke out, accompanied by a solar eclipse, and a deluge consumed the place.