Sierra Sur is a region in the state of Oaxaca, Mexico. It includes the districts of Putla, Sola de Vega, Miahuatlán and Yautepec. Miahuatlán de Porfirio Díaz is the largest city.
The region has 70 municipalities, some very poor, such as Zanizá, Amoltepec and Los Loxichas. From Wikipedia
