Hormuz is an Iranian island in the Persian Gulf. It is located in the Strait of Hormuz and is part of the Hormozgan Province. Hormoz Island has an area of 42 square kilometers (16 square miles). It is covered by sedimentary rock and layers of volcanic material on its surface. The highest point of the island is about 186 metres above sea level. Due to a lack of precipitation, the soil and water are salty. Specialists have helped cultivar Hara trees to grow in the climate. Due to the lack of fresh water, Iranian engineers have piped water from the mainland of Iran underground.