Tadesse Tamrat records that archeologists discovered "some remains of Christian settlements", dated to the late first millennium of the current era [REF].
When the missionary Johann Ludwig Krapf was led as a prisoner from Adare Bille's capital to the Teledere House of the Wollo Oromo in April 1843 he passed Kombolcha, which he described as a village near the source of the Borkana River [REF].