Axum Empire

The largest stele, about 30 meters high and weighing over 500 tons, lies in ruins. It was probably damaged during construction.

An excerpt from the article 20 facts about Axum Empire
It is considered the tallest monolithic stele built by the ancients, surpassing the Egyptian obelisks. Because of the rich decoration of the stele, it is possible that the rulers of Aksum rested in the tombs.