evidence: The diamond-shaped island that makes up Singapore's main territory is surrounded by smaller islands. Pedra Branca is the farthest outlying island. Jurong Island, Pulau Tekong, Pulau Ubin, and Sentosa are the largest of Singapore's numerous smaller islands. The majority of Singapore is only 15 meters above sea level. The highest point in Singapore is Bukit Timah Hill, which rises 165 meters (538 feet) above ground and is composed of the igneous rock granite. The northwest is dominated by sedimentary rock hills and valleys, whereas the eastern part of the country is sandy and flat. [...] Singapore's geography is defined by its strategic location at the Malay Peninsula's southern tip, bordered by the Singapore Strait, the Johor Straits, and the South China Sea. The territory of the country is made up of the main island plus several smaller islands. Its flat terrain is dominated by urban development, with a few elevated areas. High temperatures, steady rainfall, and two monsoon seasons characterize the climate. [...] Singapore is an island city-state situated at the southern tip of the Malay Peninsula, between Malaysia and Indonesia, along the Singapore Strait and South China Sea.