Al-Ahsa Oasis
Al-Ahsa Oasis (Arabic: الْأَحْسَاء, al-ʾAhsā), also known as al-Ḥasāʾ (الْحَسَا) or Hajar (هَجَر), is an oasis and historical region in eastern Saudi Arabia. Al-Ahsa Governorate, which makes up much of the country's Eastern Province, is named after it.