Ankaratra is located in Madagascar

Ankaratra is an extinct/dormant volcano range located about 50 kilometers southwest of Antananarivo, the capital city of Madagascar. It lies between the towns of Arivonimamo to the North, Ambatolampy to the East, Faratsiho to the West and Betafo to the South. Some trace of activity remains in the southernmost part of the range, creating hot springs in the area around Antsirabe.

• http://en.wikipedia.org/wiki/Ankaratra Field