The first equestrian relief, located immediately below the fourth tomb (perhaps that of Darius II), depicts the king battling a mounted Roman enemy.

The second equestrian relief, located immediately below the tomb of Darius I, is divided into two registers, an upper and a lower one.
In the upper register, the king appears to be forcing a Roman enemy, probably Roman emperor Carus from his horse.
In the lower register, the king is again battling a mounted enemy wearing a headgear shaped as an animal’s head, thought to be the vanquished Indo-Sassanian ruler Hormizd I Kushanshah.
Both reliefs depict a dead enemy under the hooves of the king's horse.
The first equestrian relief, located immediately below the fourth tomb (perhaps that of Darius II), depicts the king battling a mounted Roman enemy.
The second equestrian relief, located immediately below the tomb of Darius I, is divided into two registers, an upper and a lower one. In the upper register, the king appears to be forcing a Roman enemy, probably Roman emperor Carus from his horse. In the lower register, the king is again battling a mounted enemy wearing a headgear shaped as an animal’s head, thought to be the vanquished Indo-Sassanian ruler Hormizd I Kushanshah. Both reliefs depict a dead enemy under the hooves of the king's horse.
Naqsh-e Rostam