Эр-Рахба

Al-Rahba (/ALA-LC: al-Raḥba, sometimes spelled Raḥabah), also known as '''Qal'at al-Rahba''', which translates as the "Citadel of al-Rahba", is a medieval Arab fortress on the west bank of the Euphrates River, adjacent to the city of Mayadin in Syria. Situated atop a mound with an elevation of , al-Rahba oversees the Syrian Desert steppe. It has been described as "a fortress within a fortress"; it consists of an inner keep measuring , protected by an enclosure measuring . Al-Rahba is largely in ruins today as a result of wind erosion.