Aravalli Hills Under Threat: How Mining, Legal Redefinition, and Silence Are Dismantling India’s Oldest Mountain Range

The Aravalli Hills are not merely hills of stone and soil; they are a silent ecological system that has protected northern India for millions of years. Older than the Himalayas, the Aravalli range stretches nearly 800 kilometres, cutting across Gujarat, Rajasthan, Haryana, and Delhi NCR. These hills regulate groundwater, slow desertification, support forests, and act as a natural barrier against dust storms moving eastward from the Thar Desert.

Yet today, the Aravallis are being dismantled — not only by excavators and mining blasts, but also by legal definitions, administrative delays, and public indifference. What is unfolding is not a sudden environmental disaster, but a slow and systematic erosion of protection, legitimacy, and accountability.

How Mining in the Aravalli Hills Began

Mining in the Aravalli region did not start recently. Stone, marble, quartz, and other minerals have been extracted for decades, particularly in Rajasthan and Haryana. Over time, mining expanded from regulated zones into forest land, common land, and ecologically sensitive ridges.

Despite multiple bans and warnings, illegal mining flourished, often operating at night or under weak enforcement. According to ground reports and government assessments, 25–35% of the Aravalli range has already been damaged due to mining activity.

Between 1999 and 2019, forest cover in the Aravalli region fell from 10,462 sq km to 6,116 sq km — a 41% decline. This loss has directly impacted biodiversity, rainfall absorption, and soil stability.

The Water Crisis Nobody Talks About

The Aravalli Hills are one of the most important groundwater recharge systems in North India. Their rocky structure allows rainwater to seep underground, replenishing aquifers across Rajasthan, Haryana, and NCR.

However, mining has disrupted this system severely.

In several mining belts:

1.7 to 3 litres of groundwater are extracted for every litre that can naturally recharge

Aquifers have dropped to “over-exploited” status

Seasonal rivers and johads have dried up permanently

This directly affects drinking water availability, agriculture, and urban water supply — especially in Delhi NCR, Gurugram, Faridabad, and Alwar.

The Supreme Court Order: What Changed in 2025

In November 2025, the Supreme Court of India delivered a crucial order while hearing long-pending environmental cases related to forest protection and mining regulation.

Who Proposed the Change

The Union Ministry of Environment, Forest and Climate Change (MoEF&CC) proposed a uniform scientific definition of the Aravalli Hills through an expert committee. The stated aim was clarity and consistent regulation across states.

Who Passed It

A three-judge bench of the Supreme Court accepted this definition.

What the New Definition Says

Only landforms rising at least 100 metres above the surrounding terrain would legally qualify as Aravalli Hills.

Why This Definition Is Dangerous

On paper, the definition appears technical. On the ground, its impact is massive.

Studies show that:

Only 8–10% of the Aravalli region meets the 100-metre criterion

Over 90% of existing ridges and hill systems fall below this threshold

These “smaller” hills are precisely the ones that:

Recharge groundwater

Prevent desert spread

Act as green buffers for NCR

By excluding them legally, the ruling risks removing protection from most of the Aravalli ecosystem, even if mining is temporarily restricted.

Mining Leases: What Is Allowed and What Is Stopped

The Supreme Court:

Banned fresh mining leases in the Aravalli range

Allowed existing leases to continue under stricter conditions

Ordered the creation of a Management Plan for Sustainable Mining (MPSM)

However, critics point out that:

Existing leases already cover vast areas

Illegal mining continues despite orders

Monitoring mechanisms remain weak

In effect, the damage continues faster than restoration.

Political and Public Reaction

Political Response

Former Rajasthan Chief Minister Ashok Gehlot openly criticised the decision, calling it an “invitation to ecological destruction”. Several leaders warned that redefining hills instead of protecting them sends the wrong message to mining lobbies.

Environmental Experts

Scientists and conservationists argue that ecology cannot be protected through elevation criteria alone. Low-height hills are often the most crucial for water and climate stability.

Tribal and Local Communities

Tribal communities in southern Rajasthan have protested, stating that the Aravallis are not just landforms but part of their identity, livelihood, and survival.

Public Sentiment: Anger, Fear, and Distrust

Across social media and citizen forums:

Many fear the ruling will legitimise future mining

Residents of NCR worry about air quality and water scarcity

Activists describe the move as “environmental damage by paperwork”

There is a growing belief that once mining resumes under weaker definitions, the loss will be irreversible.

What Lies Ahead

The future of the Aravalli Hills depends on:

How strict the Sustainable Mining Plan actually is

Whether illegal mining is genuinely stopped

Whether smaller hill systems regain legal recognition

Public pressure and accountability

Without strong enforcement and ecological priority, the Aravallis risk becoming another case study of how ancient natural systems are sacrificed quietly for short-term gain.

Conclusion: A Test of Environmental Responsibility

The Aravalli Hills have survived millions of years of natural change, but may not survive a few decades of legal dilution and unchecked mining. The statistics — 41% forest loss, 90% hills excluded, severe groundwater depletion — are not warnings anymore; they are evidence.

This is not just an environmental issue. It is a question of governance, ethics, and long-term survival.

Whether India chooses to protect or redefine its oldest mountain range will decide not only the fate of the Aravallis, but the environmental future of North India itself.