Ancient Geography, the fountain of song, was situated in Magnesia, a district of Macedonia, annexed to Thessaly; distinct from the town of Libethra, which stood on Mount Olympus, where it verges towards Macedonia: hence the muses are called Libethrides, (Virgil.) Strabo places on Helicon, not only Hippocrene, and the temple of the Muses, but also the cave of the nymphs Libethrides.