
Road accidents are common in Ethiopia, Africa's second most populous nation, where roads are often poorly maintained.
The bus, which was travelling from Dessie city in Amhara to the capital Addis Ababa, "plunged into a ravine approximately 100 metres deep (330 feet)", local authorities wrote on Facebook.
Twenty-eight people were killed and "many others have sustained minor or severe injuries", officials said, without giving exact figures.
The survivors were transported to medical facilities and an investigation is under way.
The total number of passengers has not been released.
Images shared by the official regional Facebook account showed a vehicle lying on a hillside, almost entirely obliterated.
In December 2024, more than 70 people were killed in the south after a vehicle carrying a wedding party plunged into a river, reports BSS.
It was the deadliest accident in the country in a quarter of a century.
In September of the same year, a bus swerved into a river in southern Wolaita, leaving at least 28 people dead and 19 others seriously injured.