Ethiopia is a land of vast horizons and dramatic scenery. The weathered mountains in the Ethiopian Highlands exhibit layer upon layer of volcanic material, which built the plateau into Africa's most extensive upland region. In places, basaltic lavas lie 6,500 feet deep.The most popular crop grown in Ethiopia is Teff, a small-grained cereal, which is used to make injera, a fermented, bread-type pancake _ the national dish. Teff stands as an example of Ethiopia's early success as a centre for plant domestication..