Muscat is located in northeast Oman, at 24°00′N 57°00′E. The Tropic of Cancer passes south of the area. It is bordered to its west by the plains of the Al Batinah Region and to its east by Ash Sharqiyah Region. The interior plains of the Ad Dakhiliyah Regionborder Muscat to the south, while the Gulf of Oman forms the northern and western periphery of the city. The water along to coast of Muscat runs deep, forming two natural harbours, in Muttrah and Muscat. The Western Al Hajar Mountains run through the northern coastline of the city.
Volcanic rocks are apparent in the Muscat area, and are composed of serpentine and diorite, extending along the Gulf of Oman coast for ten or twelve 16 kilometres (9.9 mi) from the district of Darsait to Yiti. Plutonic rocks constitute the hills and mountains of Muscat and span approximately 30 miles (48 km) from Darsait to Ras Jissah. These igneous rocks consists of serpentine, greenstone and basalt, typical of rocks in Southeastern regions of the Arabian Peninsula. South of Muscat, the volcanic rock strata is broken up and distorted, rising to a maximum height of 6,000 feet (1,800 m), in Al Dakhiliyah, a region which includes Jebel Akhdar, the country's highest range. The hills in Muscat are mostly devoid of vegetation but are rich in iron.
The halophytic sabkha type desert vegetation is predominant in Muscat. The Qurum Nature Reserve contains plants such as theArthrocnemum Macrostachyum and Halopeplis Perfoliata Coral reefs are common in Muscat. Acropora reefs exist in the sheltered bays of the satellite towns of Jussah and Khairan. Additionally, smaller Porites reef colonies exist in Khairan, which have fused to form a flat-top pavement is visible at low tide. Crabs and spiny crayfish are found in the waters of the Muscat area, as are sardines andbonito. Glassfish are common in freshwater estuaries, such as the Qurum Nature Reserve.
The Al Sultan Qaboos Street forms the main artery of Muscat, running
