Buton is an island in Indonesia located off the southeast peninsula of Sulawesi. It covers roughly 4,727 square kilometers in area, or about the size of Madura; it is the 129th largest island in the world and Indonesia's 19th largest in area.
On the Indonesian island of Sulawesi, 114 native languages are spoken, all of which belong to the Malayo-Polynesian subgroup of the Austronesian language family. With a total number of 17,200,000 inhabitants, Sulawesi displays a high linguistic diversity when compared with the most densely populated Indonesian island Java, which hosts 4–8 languages spoken by 145,100,000 inhabitants.