Poseidon used his trident, which was forged by the cyclopes according to Pseudo-Apollodorus's Bibliotheke, to strike a rock upon the hill of the Acropolis, producing a well of seawater, which was later to be called the Erechtheis.
Poseidon used his trident, which was forged by the cyclopes according to Pseudo-Apollodorus's Bibliotheke, to strike a rock upon the hill of the Acropolis, producing a well of seawater, which was later to be called the Erechtheis.