Uttarakhand in the context of "Operation Surya Hope"

Northwest India is a loosely defined region of India. In modern-day, it consists of north-western states of the Republic of India. In historical contexts, it refers to the northwestern Indian subcontinent (including modern-day Pakistan).

In contemporary definition, it generally includes the states of Haryana, Himachal Pradesh, Punjab, Rajasthan Uttarakhand, and often Uttar Pradesh, along with the union territories of Chandigarh, Jammu and Kashmir, Ladakh, and the National Capital Territory of Delhi. Gujarat, a western coastal state, is occasionally included as well. The mountainous upper portion of Northwest India consists of the Western Himalayas, while the flat lower portion consists of the middle portion of the Indo-Gangetic plains and the Thar Desert.

Modern Standard Hindi (आधुनिक मानक हिन्दी, Hunterian: Ādhunik Mānak Hindī), commonly referred to as Hindi, is an Indo-Aryan language written in the Devanagari script. It is an official language of the Government of India, and is the lingua franca of most of the country. It is also an official language in the Pacific nation of Fiji.

Hindi is an official language in ten states (Bihar, Chhattisgarh, Gujarat, Haryana, Himachal Pradesh, Jharkhand, Madhya Pradesh, Rajasthan, Uttar Pradesh, Uttarakhand), and six union territories (Andaman and Nicobar Islands, Delhi, Chandigarh, Dadra and Nagar Haveli and Daman and Diu, Ladakh and Jammu and Kashmir) and an additional official language in the state of West Bengal. Hindi is also one of the 22 scheduled languages of the Republic of India.

The Ganges (/ˈɡændʒiːz/ GAN-jeez; in India: Ganga, /ˈɡʌŋɡɑː/ GUNG-ah; in Bangladesh: Padma, /ˈpʌdmə/ PUD-mə) is a trans-boundary river of Asia which flows through India and Bangladesh. The 2,525-kilometre-long (1,569 mi) river rises in the western Himalayas in the Indian state of Uttarakhand. It flows south and east through the Gangetic plain of North India, receiving the right-bank tributary, the Yamuna, which also rises in the western Indian Himalayas, and several left-bank tributaries from Nepal that account for the bulk of its flow. In West Bengal, India, a feeder canal taking off from its right bank diverts 50% of its flow southwards, artificially connecting it to the Hooghly River. The Ganges continues into Bangladesh, its name changing to the Padma. It is then joined by the Jamuna, the lower stream of the Brahmaputra, and eventually the Meghna, forming the major estuary of the Ganges Delta, and emptying into the Bay of Bengal. The Ganges–Brahmaputra–Meghna system is the second-largest river on earth by discharge.

The main stem of the Ganges begins at the town of Devprayag, at the confluence of the Alaknanda, which is the source stream in hydrology on account of its greater length, and the Bhagirathi, which is considered the source stream in Hindu mythology.

Bengali, also known by its endonym Bangla, is a classical Indo-Aryan language belonging to the Indo-Iranian branch of the Indo-European language family. It is primarily spoken by the Bengali people, native to the Bengal region (Bangladesh, India's West Bengal and parts of Southern Assam) as well as Tripura of South Asia. With over 242 million (24.2 crore) native speakers and another 43 million (4.3 crore) as second language speakers as of 2025, Bengali is the sixth most spoken native language and the seventh most spoken language by the total number of speakers in the world.

Bengali is the official, national, and most widely spoken language of Bangladesh, with 98% of Bangladeshis using Bengali as their first language. It is the second-most widely spoken language in India. It is the official language of the Indian states of West Bengal, Tripura and the Barak Valley region of the state of Assam. It is also the second official language of the Indian state of Jharkhand since September 2011. It is the most widely spoken language in the Andaman and Nicobar Islands in the Bay of Bengal, and is spoken by significant populations in other states including Bihar, Arunachal Pradesh, Delhi, Chhattisgarh, Meghalaya, Mizoram, Nagaland, Odisha and Uttarakhand. Bengali is also spoken by the Bengali diasporas (Bangladeshi diaspora and Indian Bengalis) across Europe, North America, the Middle East and other regions.

Uttar Pradesh (UTT-ər prə-DESH, abbr. UP; Hindi: Uttar Pradēś, pronounced [ˈʊtːəɾ pɾəˈdeːʃ] , lit. 'Northern Province') is a state in northern India. With over 241 million inhabitants, it is the most populated state in India as well as the most populous country subdivision in the world – more populous than all but four other countries outside of India (China, United States, Indonesia, and Pakistan) – and accounting for 16.5 per cent of the population of India or around 3 per cent of the total world population. The state is bordered by Rajasthan to the west, Haryana, Himachal Pradesh and Delhi to the northwest, Uttarakhand and Nepal to the north, Bihar to the east, Madhya Pradesh, Chhattisgarh and Jharkhand to the south. It is the fourth-largest Indian state by area covering 243,286 km (93,933 sq mi), accounting for 7.3 per cent of the total area of India. Lucknow serves as the state capital, with Prayagraj being the judicial capital. It is divided into 18 divisions and 75 districts.

Uttar Pradesh was established in 1950 after India had become a republic. It is a successor to the United Provinces, established in 1935 by renaming the United Provinces of Agra and Oudh, in turn established in 1902 from the North-Western Provinces and the Oudh Province. Though long known for sugar production, the state's economy is now dominated by the services industry. The service sector comprises travel and tourism, hotel industry, real estate, insurance and financial consultancies. The economy of Uttar Pradesh is the third-largest state economy in India, with ₹18.63 lakh crore (US$220 billion) in gross domestic product and a per capita GSDP of ₹68,810 (US$810). The High Court of the state is located in Prayagraj. The state plays an important role in national politics, sending 80 seats to the lower house Lok Sabha and 31 seats to the upper house Rajya Sabha.

Rhododendron (/ˌroʊdəˈdɛndrən/; pl.: rhododendra), from Ancient Greek ῥόδον (rhódon), meaning "rose", and δένδρον (déndron), meaning "tree", is a very large genus of about 1,024 species of woody plants in the heath family (Ericaceae). They can be either evergreen or deciduous. Most species are native to eastern Asia and the Himalayan region, but smaller numbers occur elsewhere in Asia, and in North America, Europe and Australia.

It is the national flower of Nepal, the state flower of Washington and West Virginia in the United States, the state flower of Nagaland and Himachal Pradesh in India, the provincial flower of Jeju Province in South Korea, the provincial flower of Jiangxi in China and the state tree of Sikkim and Uttarakhand in India. Most species have brightly coloured flowers which bloom from late winter through to early summer.

North India is a geographical region, loosely defined as a cultural region comprising the northern part of India (or historically, the Indian subcontinent) wherein Indo-Aryans (speaking Indo-Aryan languages) form the prominent majority population, while Tibeto-Burmans (speaking Tibeto-Burman languages) form the significant minority population. It extends from the Himalayan mountain range in the north to the Indo-Gangetic plains, the Thar Desert, till Central Highlands. It occupies nearly two-quarters of the area and population of India and includes one of the three mega cities of India: Delhi. In a more specific and administrative sense, North India can also be used to denote the northern Indo-Gangetic Plain within this broader expanse, to the Thar Desert.

Several major rivers flow through the region including the Indus, the Ganges, the Yamuna and the Narmada rivers. North India includes the states of Himachal Pradesh, Uttarakhand, Punjab and Haryana, Rajasthan, Uttar Pradesh, and union territories of Chandigarh, Delhi, Jammu and Kashmir and Ladakh. Occasionally, states of Western, Central and Eastern India are referred as "North Indian" in a broader term.

Himachal Pradesh (Hindi: Himācal Pradeś, pronounced [ɦɪˈmäːtʃəl pɾəˈd̪eːʃ]; Sanskrit: himācāl prādes; lit. "Snow-laden Mountain Province") is a state in the northern part of India. Situated in the Western Himalayas, it is one of the 13 mountain states and is characterised by an extreme landscape featuring several peaks and extensive river systems. Himachal Pradesh is the northernmost state of India and shares borders with the union territories of Jammu and Kashmir and Ladakh to the north, and the states of Punjab to the west, Haryana to the southwest, Uttarakhand to the southeast and a very narrow border with Uttar Pradesh to the south. The state also shares an international border to the east with the Tibet Autonomous Region in China. Himachal Pradesh is also known as Dev Bhoomi, meaning 'Land of Gods' and Veer Bhoomi which means 'Land of the Brave'.

The predominantly mountainous region comprising the present-day Himachal Pradesh has been inhabited since pre-historic times, having witnessed multiple waves of human migrations from other areas. Through its history, the region was mostly ruled by local kingdoms, some of which accepted the suzerainty of larger empires. Prior to India's independence from the British, Himachal comprised the hilly regions of the Punjab Province of British India. After independence, many of the hilly territories were organised as the Chief Commissioner's province of Himachal Pradesh, which later became a Union Territory. In 1966, hilly areas of the neighbouring Punjab state were merged into Himachal and it was ultimately granted full statehood in 1971.

Nanda Devi is the second-highest mountain in India, after Kangchenjunga, and the highest located entirely within the country. (Kangchenjunga is on the border of India and Nepal.) Nanda Devi is the 23rd-highest peak in the world and ranked 74th by prominence in Chamoli Garhwal district of Uttarakhand, in northern India.

Nanda Devi was considered the highest mountain in the world before computations in 1808 proved Dhaulagiri to be higher. It was also the highest mountain in India until 1975, when Sikkim, an independent kingdom until 1948 and a protectorate of India thereafter, became a state of India. It is located in the Chamoli district of Uttarakhand, between the Rishiganga valley on the west and the Goriganga valley on the east.