Save the Himalaya & the Aravalli: Interconnected lifelines of the Indian Subcontinent
Rakesh Kapoor
The call to save the Himalaya and save the Aravalli is not merely an emotional appeal for environmental conservation; it is a scientific, ecological, and civilisational necessity. Though geographically distant and vastly different in age and elevation, the Himalayan and Aravalli ranges are deeply interconnected in sustaining the climate, water systems, biodiversity and human life of the Indian subcontinent. The degradation of either weakens the ecological balance of the entire region, threatening millions of lives and livelihoods.
The Himalaya, the youngest and tallest mountain system in the world, are often described as the “water towers of Asia.” They give birth to some of the largest river systems—Ganga, Yamuna, Brahmaputra, Indus and their tributaries—that support nearly half a billion people. These mountains regulate monsoon patterns, act as a climatic barrier shielding the subcontinent from harsh Central Asian winds and store vast amounts of freshwater in the form of glaciers and snowfields. Beyond their physical role, the Himalaya are also a cultural and spiritual backbone of India, revered in scriptures, traditions and collective consciousness.
The Aravalli range, on the other hand, is among the oldest mountain systems on Earth, stretching from Gujarat through Rajasthan to Delhi and Haryana. Though lower in height and often underestimated, the Aravalli play a crucial role in preventing desertification, regulating groundwater, supporting biodiversity, and moderating climate in north-western India. They act as a natural barrier against the eastward expansion of the Thar desert and help recharge aquifers that sustain cities like Delhi, Gurugram, Jaipur and Alwar.
The interconnection between the Himalaya and the Aravalli lies primarily in climate regulation and hydrological cycles. The Himalaya influence the monsoon system by intercepting moisture-laden winds, ensuring rainfall across the Indo-Gangetic plains. This rainfall feeds rivers and groundwater systems that ultimately sustain vegetation, forests, and ecosystems across northern and western India—including the Aravalli region. Healthy forests in the Himalaya help regulate river flows, reduce floods, and prevent excessive siltation, which in turn affects downstream plains and arid regions.
The Aravalli complement this system by stabilising local climates, capturing moisture and sustaining forest cover in semi-arid zones. When Aravalli forests are intact, they help retain rainfall, recharge groundwater and support agriculture. This balance indirectly reduces pressure on Himalayan ecosystems by moderating extreme climatic events such as droughts, heatwaves, and dust storms that otherwise intensify environmental stress across the subcontinent.
Unfortunately, both mountain systems are under severe threat. The Himalaya are facing rapid glacier retreat due to climate change, unregulated tourism, deforestation, hydropower projects, road construction and reckless urban expansion. Frequent landslides, flash floods and disasters like those witnessed in Uttarakhand and Himachal Pradesh are clear warnings of ecological limits being crossed.
The Aravalli are suffering even more silently. Rampant mining, illegal construction, deforestation, and dilution of environmental laws have reduced large stretches of this ancient range to fragmented hillocks. In the National Capital Region alone, the destruction of the Aravalli has led to falling groundwater levels, worsening air pollution, rising temperatures and frequent dust storms. What once acted as a green lung and water sponge is now struggling to survive.
The ramifications of neglecting these ranges are far-reaching. Water scarcity, food insecurity, climate extremes, biodiversity loss, and increased human vulnerability are already becoming everyday realities. The subcontinent’s ecological resilience depends on the health of both these mountain systems functioning together as part of a larger natural network.
Saving the Himalaya and the Aravalli requires integrated, long-term action. This includes enforcing strict environmental regulations, halting illegal mining and deforestation, promoting sustainable tourism, restoring degraded forests, protecting river catchments and involving local communities as custodians of nature. Scientific planning must replace short-term economic gains, and ecological costs must be central to all development decisions. Equally important is public awareness and moral responsibility. These mountains are not obstacles to development; they are enablers of life. The prosperity of the Indian subcontinent—past, present, and future—has been shaped by them. Protecting them is not an option but a duty owed to future generations.
In essence, to save the Himalaya is to save India’s water and climate; to save the Aravalli is to save its land, air, and ecological balance. Together, they form an invisible yet powerful shield for the Indian subcontinent. Ignoring this interdependence would be an irreversible mistake. Acting now, with wisdom and urgency, is the only path toward a sustainable and secure future.
(A retired civil servant, the author is also an environmental expert; views expressed are personal)
