Similar in design to those of Lalibela in the Amhara Region, these churches are found in four or five clusters – Gheralta, Teka-Tesfay, Atsbi and Tembien – with Wukro sometimes included. Some of the churches are considered earlier than those of Lalibela, perhaps dating from the eighth century. Mostly monolithic, with designs partly inspired by classical architecture, they are often located at the top of cliffs or steep hills, for security.