Least Landslide Vulnerable Region: Aravali Mountains

The Aravali Mountains are identified as the region in India least vulnerable to landslides.

Aravali Mountains: Low Landslide Risk Factors

• Geological Stability: As one of the world's oldest eroded mountain ranges, the Aravalis possess a stable geological structure, reducing the likelihood of mass ground movement.
• Climate and Location: Situated in northwestern India, this region generally experiences lower average rainfall and less intense seismic activity compared to the Himalayas and the Western Ghats, key factors that trigger landslides.

High Landslide Risk Factors: Other Regions

In contrast, the other regions listed face significantly higher landslide risks due to:

• Himalayan Regions (Uttarakhand & East): These areas are characterized by young, seismically active, and geologically unstable tectonic plates. Steep slopes combined with heavy monsoon rainfall and potential earthquakes frequently trigger landslides.
• Western Ghats: This region features steep slopes prone to landslides, especially during the monsoon season due to extremely heavy rainfall. Deforestation and urbanization can further exacerbate this vulnerability.

Therefore, based on geological age, stability, and climatic conditions relative to landslide triggers, the Aravali Mountains stand out as the least vulnerable.