sentences:  Part of the Jimma Zone, Gera is bordered on the south by the Gojeb River which separates it from the Southern Nations, Nationalities and Peoples Region, on the northwest by Sigmo, on the north by Setema, on the northeast by Gomma, and on the east by Seka Chekorsa.The administrative center of this woreda is Chira; other towns in Gera include Cheriko and Dusta.The altitude of this woreda ranges from 1390 to 2980 meters above sea level; mountains include Waka, Kimbibit and Timba.