Brunei is a country located on the north coast of the island of Borneo in Southeast Asia. Apart from its coastline with the South China Sea, the country is completely surrounded by the Malaysian state of Sarawak. It is separated into two parts by the Sarawak district of Limbang. Brunei is the only sovereign state completely on the island of Borneo; the remainder of the island's territory is divided between the nations of Malaysia and Indonesia. Brunei consists of a narrow coastal plain in the north, which gives way to rugged hills in the south.

Pagon is the highest mountain in Brunei (6,070 feet [1,850 metres]). It is situated on the border with Malaysia on the island of Borneo. Pagon Hill is located in the Temburong District of Brunei. This district is separated from the rest of Brunei by part of the Sarawak State of Malaysia.

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