Qaisumah, Saudi Arabia

Qaisumah is a town belongs to Hafar Al-Batin, which Hafar Al-Batin is a city in the
Eastern Province is the largest province of Saudi Arabia, located in the east of the country on the Persian Gulf coast, and has land borders with Kuwait, Qatar, the United Arab Emirates, Oman, and Yemen. It has an area of 710,000 km² and a population of 3,360,157 (As of 2004 census). Its capital is Dammam, and its governor is Prince Mohammed bin Fahd bin Abdul Aziz al-Saud.
The Eastern Province was conquered by the Saudis in 1914 from the Ottoman Empire. The inhabited areas had been known as under Ottoman rule, and the entire region was mostly known as Bahrain from pre-islamic times until 1521. Many Saudi history books/articles call the Eastern Province Hasa and Qatif because The most famous ancient cities in it are Qatif and Al-Hasa. Most other cities—notably Dammam and Khobar—were built in the 20th century and did not exist before Saudi Arabia's oil production.