Unit 2.2: Northern Mountains: Karakoram to Shiwaliks
Indian Geography → Indian Geography → PHYSICAL FOUNDATIONS → PHYSICAL FOUNDATIONS → Physiography & Relief | Author: admin | Feb 11, 2026
1. Introduction & Significance Unit 2.2 (Northern Mountains: Karakoram to Shiwaliks) is a high-weightage topic in UPSC Prelims (MCQs on divisions, ranges, peaks, passes) and Mains (analytical on climate barrier, river origins, disasters). SSC/RRB/State PSC ask factuals (ranges, heights, states). Crucial in 2026 due to Himalayan hazards (landslides, floods) and infrastructure (BRO roads under Bharatmala ~21,783 km completed Dec 2025). Links to geopolitics (LAC passes) and ecology (biosphere reserves). This is a 10–12 mark area — master longitudinal divisions for maps and Mains answers on orogeny impacts.
2. Chronological/Geological Timeline
- ~50–40 Ma: Indian plate collision ? initial Himalayan uplift begins.
- ~35–20 Ma: Main Himalayan phase; Greater Himalayas form.
- ~20–10 Ma: Lesser Himalayas uplifted.
- ~10 Ma–present: Shiwalik formation (youngest outer range).
- Ongoing: Himalayas rise ~5 mm/year; Karakoram stable but glacial melt accelerates.
- 2020s–2026: BRO builds tunnels/roads in ranges; recent glacial lake studies (2025) highlight risks.
3. Concept Deep Dive Northern Mountains divide into four longitudinal zones from north to south:
- Trans-Himalayas (Karakoram, Ladakh): North of Greater Himalayas; arid, cold desert; Karakoram Range highest peaks.
- Greater Himalayas (Himadri): Central, highest, snow-covered; Everest, Kanchenjunga; acts as climatic barrier.
- Lesser Himalayas (Himachal): South of Greater; lower, forested; Pir Panjal, Dhauladhar; valleys like Kashmir.
- Shiwaliks (Outer Himalayas): Southernmost; youngest, foothills; Siwalik hills, dun valleys (terai/bhabar). Formation from compression; north-south sequence reflects tectonic phases. (Ref: NCERT Class 11 India Physical Environment Ch. 2 "Physiography"; Savindra Singh Ch. 5 "Mountain Building"; Goh Cheng Leong Ch. on Fold Mountains; Majid Husain Ch. 2 for divisions; Oxford Atlas for range maps).
4. Key Terminology Box
- Trans-Himalayas: Northernmost ranges beyond Greater Himalayas (Karakoram, Ladakh).
- Greater Himalayas (Himadri): Highest central range with permanent snow.
- Lesser Himalayas (Himachal): Middle zone with valleys and ridges.
- Shiwaliks: Southernmost foothills; young, sedimentary.
- Pir Panjal: Major range in Lesser Himalayas (J&K).
- Dhauladhar: Lesser range in Himachal Pradesh.
- Dun Valleys: Longitudinal depressions in Shiwaliks.
- Karakoram: Trans-Himalayan range with K2.
5. Important Factual Details
| Range / Division | Location / States | Average Height (m) | Key Peaks / Features |
|---|---|---|---|
| Trans-Himalayas (Karakoram) | Ladakh, J&K | 5,000–8,000 | K2 (8,611 m), Godwin Austen Glacier |
| Greater Himalayas (Himadri) | J&K, HP, Uttarakhand, Nepal, Sikkim, Arunachal | 6,000+ | Everest (8,848 m), Kanchenjunga (8,586 m) |
| Lesser Himalayas (Himachal) | J&K, HP, Uttarakhand, Sikkim, Arunachal | 3,700–4,500 | Pir Panjal, Dhauladhar; Kashmir, Kangra valleys |
| Shiwaliks | J&K to Arunachal (foothills) | 900–1,200 | Dun valleys, Siwalik hills |
6. Frequently Asked Exam Facts
- Karakoram: Part of Trans-Himalayas; highest range in world (K2).
- Greater Himalayas: Highest, snow-covered; climatic divide.
- Lesser Himalayas: Valleys like Kashmir, Kangra; Pir Panjal range.
- Shiwaliks: Youngest, foothills; bhabar/terai zones.
- Sequence: Trans ? Greater ? Lesser ? Shiwaliks (north to south).
- Everest: In Greater Himalayas (Nepal border).
- Pir Panjal: Separates Kashmir from Jammu.
- Dhauladhar: Lesser range north of Dharamsala.
- Shiwaliks: Formed from eroded sediments of higher ranges.
- Karakoram: Trans-Himalayan, beyond main Himalayas.
7. Comparison Charts/Tables
| Division | Height Range (m) | Vegetation/Climate | Key Role |
|---|---|---|---|
| Trans-Himalayas | 5,000–8,000 | Arid, cold desert | Ladakh plateau, high passes |
| Greater Himalayas | 6,000+ | Perpetual snow, glaciers | Rain shadow north, monsoon barrier |
| Lesser Himalayas | 3,700–4,500 | Forests, valleys | Hill stations, agriculture |
| Shiwaliks | 900–1,200 | Subtropical forests, foothills | Terai, wildlife sanctuaries |
8. Spatial Context
- Karakoram: North Ladakh (K2, Siachen Glacier).
- Greater Himalayas: J&K (Nanga Parbat), HP (Rohtang), Uttarakhand (Nanda Devi), Sikkim (Kanchenjunga), Arunachal (Namcha Barwa).
- Lesser Himalayas: J&K (Pir Panjal), HP (Dhauladhar), Uttarakhand (Mussoorie), Sikkim (Darjeeling).
- Shiwaliks: J&K to Arunachal foothills; dun valleys (Dehradun).
- Salem/TN relevance: No direct link (south of Himalayas); TN has Eastern Ghats (older, lower) as southern counterpart. Image credit: PMF IAS via search, showing detailed longitudinal divisions of Himalayas from Karakoram to Shiwaliks. Image credit: Wikipedia via search, showing cross-section diagram of Himalayan ranges (Trans to Shiwaliks).
9. Flowchart Summary Northern Mountains ? Trans-Himalayas (Karakoram: arid north) ? Greater Himalayas (Himadri: highest, snow) ? Lesser Himalayas (Himachal: valleys, forests) ? Shiwaliks (foothills: young, dun). Image credit: Wikipedia via search, showing schematic cross-section of Himalayan zones.
10. Ultra-Short Exam Capsule
- Karakoram: Trans-Himalayas, K2.
- Greater: Himadri, Everest.
- Lesser: Himachal, Pir Panjal.
- Shiwaliks: Foothills, dun valleys.
- Sequence: N to S: Trans ? Greater ? Lesser ? Shiwaliks.
- Heights: Greater > Lesser > Shiwaliks.
- Climate: Greater barrier.
TYPE 2: QUICK REVISION & EXAM TRICKS
1. Highlights & Tricky Points
- Key: North-south sequence: Trans (cold desert) ? Greater (snow) ? Lesser (valleys) ? Shiwaliks (foothills).
- Trap: "Karakoram part of Greater?" — No; Trans-Himalayas.
- Trap: "Highest range" — Karakoram (K2); Everest in Greater.
- Trap: Shiwaliks = youngest, not highest.
2. Memory Aids/Mnemonics
- Divisions: "Trans Greater Lesser Shiwaliks" ? "TGLS: Tall Giants Love Shiwaliks" (Tall Trans, Giants Greater, Love Lesser, Shiwaliks).
- Ranges: "Karakoram Pir Dhauladhar" ? "KPD: Karakoram Pir Dhauladhar" (Trans, Lesser).
- Heights: "Greater 6000+, Lesser 4000, Shiwaliks 1000" ? "6-4-1".
3. Confusing Concepts
- Trans-Himalayas vs Greater: Trans north of Greater; arid vs snowy.
- Karakoram in Trans; Everest in Greater.
- Lesser vs Shiwaliks: Lesser higher, forested; Shiwaliks lower, foothills.
- Lesser: Pir Panjal; Shiwaliks: Siwalik hills.
TYPE 3: PYQs & EXPECTED QUESTIONS
1. PYQ Vault
- UPSC Prelims 2013: The Shiwalik Hills are also known as? ? Outer Himalayas.
- SSC CGL 2016: Which is the northernmost range of Himalayas? ? Trans-Himalayas.
- UPSC Prelims 2018: Pir Panjal range is part of? ? Lesser Himalayas.
- RRB NTPC 2019: The Karakoram range is located in? ? Trans-Himalayas.
- SSC CGL 2021: The Greater Himalayas are also called? ? Himadri.
- State PSC (HPPSC 2020): Dhauladhar range is in? ? Lesser Himalayas.
- SSC CGL 2019: Shiwaliks are the? ? Southernmost Himalayas.
- RRB JE 2022: Which range separates Kashmir Valley from Jammu? ? Pir Panjal.
- BPSC 2021: The northernmost Himalayan range is? ? Karakoram.
- TNPSC 2022: Himadri refers to? ? Greater Himalayas.
2. 2026 Expected Questions
- Name the four longitudinal divisions of the Northern Mountains.
- Which range is the northernmost in the Himalayas?
- What is the significance of the Greater Himalayas in India's climate?
- Which Lesser Himalayan range separates Kashmir from Jammu?
- Describe the Shiwaliks and their location.
- How do the Trans-Himalayas differ from the Greater Himalayas?