Mount Spil (Turkish: Spil Dağı), the ancient Mount Sipylus (Ancient Greek: Σίπυλος) (elevation 1,513 m or 4,964 ft), is a mountain rich in legends and history in Manisa Province, Turkey, in what used to be the heartland of the Lydians and what is now Turkey's Aegean Region.

According to the Byzantine commentator John the Lydian, the unknown author of the 7th-century BCE epic poem, the Titanomachy, placed the birth of Zeus not in Crete but in Lydia, which should signify Mount Sipylus.

[2] The same Tantalus is famed throughout Greek mythology thanks to the accounts that he had cut up his son Pelops and served him up as food for the gods.

Tantalus' daughter was the tragic Niobe, who is associated with the "Weeping Rock" (Ağlayan Kaya in Turkish), a natural formation facing the city of Manisa.

[citation needed] The motorway connecting the two regional metropolitan centers, İzmir and Manisa, crosses between the two neighboring masses of Mount Sipylus and Mount Yamanlar through the Sabuncubeli Pass, which was much described by ancient travellers and writers and which descends from an altitude of 600 m to sea-level in only a few kilometers.