Balloo Range

The Bollo Range is a long range of mountains on the continent of Osenia that separates East Osenia (Yallam, Taopo Swamp and surrounds) from Western portion of the continent (Alhafra, Air's Rock and surrounds). The range is so named by an unnamed resident of Alhafra who states that "The mountains to the west are called the Bollo Range and they cut the continent down the middle, the area on the other side of the range we call Eastern Osenia, not many people go there."

The Bollo Range does not contain any caves or mountain passes for passage through it, and the only way for a player of Golden Sun: The Lost Age to pass from West Osenia to East Osenia is via a journey by sea around the southern coast of Osenia.