Surgut in the context of "Ob River"

The West Siberian Plain (Russian: Западно-Сибирская равнина, romanized: Zapadno-Sibirskaya ravnina) is a large plain that occupies the western portion of Siberia, between the Ural Mountains in the west and the Yenisei River in the east, and the Altai Mountains on the southeast. Much of the plain is poorly drained and consists of some of the world's largest swamps and floodplains. Important cities include Chelyabinsk, Novosibirsk, Omsk, and Tomsk, as well as Surgut and Nizhnevartovsk.

Winters on the West Siberian Plain are harsh and long. The climate of most of the plain areas is either subarctic or continental. The plain had large petroleum and natural gas reserves. Most of Russia's oil and gas production was extracted from this area during the 1970s and 80s.

Khanty (also spelled Khanti or Hanti), previously known as Ostyak (/ˈɒstjæk/), is a branch of the Ugric languages composed of multiple dialect continua. It is varyingly considered a language or a collection of distinct languages spoken in the Khanty-Mansi and the Yamalo-Nenets Autonomous Okrugs in Siberia. It belongs to the wider Uralic language family. There were thought to be around 7,500 speakers of Northern Khanty and 2,000 speakers of Eastern Khanty in 2010, with Southern Khanty being extinct since the early 20th century. The number of speakers reported in the 2020 census was 13,900.

The Khanty language has many dialects. The western group includes the Obdorian, Ob, and Irtysh dialects. The eastern group includes the Surgut and Vakh-Vasyugan dialects, which in turn are subdivided into 13 other dialects. All these dialects differ significantly from each other by phonetic, morphological, and lexical features to the extent that the three main "dialects" (northern, southern and eastern) are mutually unintelligible. Thus, based on their significant multifactorial differences, Eastern, Northern and Southern Khanty may be considered separate but closely related languages.

Khanty-Mansiysk (Russian: Ха́нты-Манси́йск, romanized: Khánty-Mansíysk, lit. Khanty-Mansi Town; Khanty: Ёмвоҷ, Jomvoćś; Mansi: Абга, Abga) is a city in west-central Russia. Technically, it is situated on the eastern bank of the Irtysh River, 15 kilometers (9.3 mi) from its confluence with the Ob, in the oil-rich region of Western Siberia. Though it is an independent city, Khanty-Mansiysk also functions as the administrative centre of Khanty-Mansiysky District, and the administrative center of Khanty-Mansi Autonomous Okrug–Yugra.

With 101,466 estimated inhabitants, Khanty-Mansiysk is among Russia's few regional capitals that are not the largest cities in their surrounding area, as it is surpassed in population by Surgut, Nizhnevartovsk and Nefteyugansk.