We know that there is an ancient tabot in Aksum (the tabota Seyon, the “tabot of Zion”), but in our earliest sources it wasn’t identified with the Ark yet - in fact they apparently describe it as being a stone slab (one medieval legend even claimed that the Aksumite tabot was once owned by the apostles and was used by them for the Eucharist!) It was only around the late 16th century onwards IIRC that references to the tabota Seyon in Aksum was taken to mean that the ‘Ark of Zion’ (the literal box) was in Aksum.
A 13th century Coptic priest named Abu al-Makarim (aka ‘Abu Salih’) gives the following description of the ‘Ark’, which at the time was supposedly in the royal palace at
Lalibela (ancient Adefa/Roha). According to him, it contained
the two tables of stone, inscribed by the finger of God with the commandments which he ordained for the children of Israel.
The Ark of the Covenant is placed upon the altar, but is not so wide as the altar; it is as high as the knee of a man, and is overlaid with gold; and upon its lid there are crosses of gold; and there are five precious stones upon it, one at each of the four corners, and one in the middle. The liturgy is celebrated upon the Ark four times in the year, within the palace of the king; and a canopy is spread over it when it is taken out from [its own] church to the church which is in the palace of the king.
You might notice that this doesn’t exactly sound like the biblical Ark at all; however the description fits in with the Ethiopian
tabot (the ‘tablets’?) and
manbara tabot (the golden case with the lid and the crosses?): its being used in the Liturgy and being taken out in procession.
Ethiopian tradition asserts that the
tabota Seyon has long reposed at Aksum; it is uncertain however when first the cathedral of Maryam Seyon (‘St. Mary of Zion’ - I told you the
tabot gave the church its name) came to be regarded as housing the Aksum
tabot. It seems that this was certainly the case by the 16th century. The chaplain of the first Portuguese embassy to Ethiopia, Francisco Alvares, writing in the 1520s, gives the following description of the church:
It is named St. Mary of Syon… because its altar stone came from Sion. In this country (as they say) they have the custom always to name the churches by the altar stone, because on it is written the name of the patron saint. This stone which they have in this church, they say that the Apostles sent it from Mount Sion.
There is no description of the Ark of the Covenant (the box), but there is a description of the church’s altar stone (=
tabot). Alvares claims that the name of the church came from its
tabot, which was supposedly once sent by the apostles from Mount Zion in Jerusalem to Ethiopia.
During the same century (1529-1543), the Ethiopian Empire and the Muslim Adal Sultanate (located in the Horn of Africa), led by Imam Ahmad ibn Ibrahim al-Ghazi, fought a series of wars against each other. Faced with the threat of Aksum being invaded, the Ethiopian emperor supposedly had the ‘idol’ (the
tabot?) of Aksum taken out of the church for safekeeping.
[Ahmad] returned to march against the town of Aksum, which is said to be an ancient town… (The king of Abyssinia) brought forth the great idol from the church of Aksum; this was a white stone encrusted with gold, so large that it could not go out of the door; a hole had to be pierced in the church because of its size; they took it away and it was carried by four hundred men in the fortress of the country of Shire called Tabr, where it was left.
It was only from the 17th century onwards that the Aksum
tabot came to be definitively described as
the Ark of the Covenant.