Hormuz Island has an area of 42 km2 (16 sq mi). It is covered by sedimentary rock and layers of volcanic material on its surface. The highest point of the island is about 186 metres (610 ft) above sea level. Due to a lack of precipitation, the soil and water are salty. Specialists have helped cultivar white mangrove or Hara trees to grow in the climate. Due to the lack of fresh water, Iranian engineers have constructed a water pipeline from the mainland. colorful
The island, known as Organa (Όργανα) to the ancient Greeks and as Jarun in the Islamic period, acquired the name of "Hormuz" from the important harbour town of Hormuz (Ormus) on the mainland 60 km away, which had been a center of a minor principality on both sides of the strait. The principality paid tributes to the Mongol-ruled Ilkhanate and was an important source of income from maritime trade.