Hambela Wamena is a woreda within Guji Zone. The Guji Zone lies approximately 300 to 400 km south of Addis Ababa in the Guji Zone of the Oromia Region. The Guji region has a long genealogy. In 2002, Guji itself detached from Yirgacheffe, which had previously been folded in with the Sidamo name. The Guji region, which was created in 2002, takes its name from the Oromo people, a tribe who have farmed coffee on the land for generations.
Coffee from Guji was once lumped in with coffees from all over the Yirgacheff region. Before Yirgacheffe was its own region, those coffees were blended with coffee from a wide geographical area that encompassed much of central-south Ethiopia under the grade «Sidamo». Despite its long journey, Guji coffees are widely recognized as distinct from both Yirgacheffe and Sidamo coffee thanks to the unique local varieties and microclimates.