<Tr> <Th> Age of rock </Th> <Td> 75 million years </Td> </Tr> <Tr> <Th> Mountain type </Th> <Td> Mountain range </Td> </Tr> <P> The Ethiopian Highlands is a rugged mass of mountains in Ethiopia, situated in the Horn region in Northeast Africa . It forms the largest continuous area of its altitude in the continent, with little of its surface falling below 1500 m (4,921 ft), while the summits reach heights of up to 4550 m (14,928 ft). It is sometimes called the Roof of Africa due to its height and large area . Most of the Ethiopian Highlands are part of central and northern Ethiopia, and its northernmost portion reaches into Eritrea . </P> <P> In the southern parts of the Ethiopian Highlands once was located the Kingdom of Kaffa, a medieval early modern state, whence the coffee plant was exported to the Arabian peninsula . The land of the former kingdom is mountainous with stretches of forest . The land is very fertile, capable of three harvests a year . The term "coffee" derives from the Arabic qahwah (قهوة) and is traced to Kaffa . </P>

Where are the ethiopian highlands located on a map