(Strabo, Pausanias); Castalia, (Pindar, Virgil); a fountain at the foot of Mount Parnassus, in Phocis, near the temple of Apollo, or near Delphi; sacred to the Muses, thence called Castalides. Its murmurs were thought prophetic. (Nonnus, Lucian). See the articles DELPHI and PARNASSUS.