Ancient Geography, the fountain of fong, 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 mules are called Libethridae, (Virgil). Strabo places on Helicon, not only Hippocrene, and the temple of the Muses, but also the cave of the nymphs Libethrides.