Saudi Arabia is located in Asia in the Middle East, bordering the Persian Gulf and Red Sea. It has a varied landscape including coastal regions, mountains up to 3,000 meters high, and sandy deserts. The climate is harsh with frequent sandstorms and great temperature extremes. Animals found in Saudi Arabia include camels, gazelles, hyenas, and falcons. Saudi Arabia began as a group of people with similar backgrounds and grew over time to become an independent country in 1932. Oil and petroleum are the most important exports and Saudi Arabia has 25% of the world's petroleum reserves. Tourism is difficult due to strict customs but many Muslims visit holy sites like Mecca and Medina.