Al-Ukhaydir, Tabuk Province — Wikipedia

Al-Ukhaydir (Arabic: الأخيضر; also spelled al-Akhthar, al-Akhdar, al-Akhider, Akhizer), also known as Haydar or Aqabat, is a site in the Tabuk Province in Saudi Arabia, located southeast of Tabuk. During early Ottoman rule, a fort, Qal'at al-Akhdar, was built at the site, part of the larger network of fortifications along the Hajj caravan route to Medina and Mecca.