Rub' al Khali (Empty Quarter)

Rub' al Khali, also known as the Empty Quarter, is one of the largest sand deserts in the world, located on the Arabian Peninsula. It spans parts of Saudi Arabia, Oman, the United Arab Emirates, and Yemen. Covering approximately 1,000 kilometers (620 miles) in length and 500 kilometers (310 miles) in width, it features towering sand dunes, some reaching heights of over 250 meters (820 feet). Despite its harsh environment, the desert is home to unique flora and fauna adapted to extreme conditions. Historically, it has posed challenges for exploration and habitation due to its vast, arid landscape.