Barisan Mountains in the context of "Mount Kerinci"

Riau (Jawi: رياو‎) is a province of Indonesia. It is located on the central eastern coast of the island of Sumatra, and extends from the eastern slopes of the Barisan Mountains to the Malacca Strait, including several large islands situated within the Strait. The province shares land borders with North Sumatra to the northwest, West Sumatra to the west, and Jambi to the south, and a maritime border with the Riau Islands and the country of Malaysia to the east. It is the second-largest province in the island of Sumatra after South Sumatra with a total land area of 93,356.32 km², and an estimated population of 7,007,353 in 2024. The province comprises ten regencies and two cities, with Pekanbaru serving as the capital and largest city.

Historically, Riau has been a part of various monarchies before the arrival of European colonial powers. Muara Takus, a Buddhist temple complex believed to be a remnant of the Buddhist empire of Srivijaya c. 11th-12th century, is situated in Kampar Regency in Riau province. Following the spread of Islam in the 14th century, the region was then under control of Malay sultanates of Siak Sri Indrapura, Indragiri, and Johor. The sultanates later became protectorate of the Dutch and were reduced to puppet states of the Dutch East Indies. After the establishment of Indonesia in 1945, Riau belonged to the republic's provinces of Sumatra (1945–1948) and Central Sumatra (1948–1957). On 10 August 1957, the province of Riau was inaugurated and it included the Riau Islands until 2004.

Jambi is a province of Indonesia. It is located on the east coast of central Sumatra and stretches to the Barisan Mountains in the west. Its capital and largest city is also called Jambi. It is bordered by the provinces of Riau to the north, West Sumatra to the west, Bengkulu to the southwest, South Sumatra to the south, and shares a maritime border with the Riau Islands to the east and the Pacific Ocean to the east. The province has a land area of 49,026.58 km, and a sea area of 3,274.95 km. Its area is comparable to the European country of Slovakia or Smolensk Oblast. It had a population of 3,092,265 according to the 2010 census and 3,548,228 according to the 2020 census; the official estimate of population as of mid-2024 was 3,745,746 (comprising 1,893,490 males and 1,830,790 females).

The Sumatran striped rabbit (Nesolagus netscheri), also known as the Sumatra short-eared rabbit or Sumatran rabbit, is a rabbit found only in forests in the Barisan Mountains in western Sumatra, Indonesia, and surrounding areas. It is threatened by habitat loss.