Aksum, whose name is thought to mean "chief of the water," sits at over 2,130 meters above sea level in Ethiopia's Tigray highlands . More than an ancient capital, it is the sacred heart of Ethiopia, where towering granite stelae mark the tombs of forgotten kings, the Chapel of the Tablet is believed to guard the Ark of the Covenant, and the living traditions of the Orthodox Church have endured for over 1,700 years.