This document provides information about Madinah, including: 1) Madinah is located in northwest Saudi Arabia near the Red Sea, surrounded by mountains, with a flat plateau and green areas between volcanic rocks. 2) Madinah has been known by different names over time, including Yasrab and its current name Madinah, which means "city." 3) In 622 AD, the Prophet Muhammad migrated to Madinah, known as the Hijrah, marking the beginning of the Islamic calendar and establishing Madinah as an important religious center.