NEW DELHI: A fresh controversy has erupted in India over the redefinition of the Aravalli hills, with critics alleging that the move could weaken environmental protections and open the door to expanded mining activity across several states.
The Aravalli range, one of the world’s oldest mountain systems, stretches across Rajasthan, Haryana, Delhi and Gujarat, and plays a vital role in preventing desertification and improving air quality in the National Capital Region. Environmentalists have long warned that unchecked mining and deforestation threaten its fragile ecosystem.
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In November 2025, a committee under the Ministry of Environment, Forest and Climate Change proposed a revised definition of the Aravallis, later accepted by the Supreme Court. Under the new criteria, an “Aravalli hill” is defined as a landform rising at least 100 metres above surrounding terrain, with clusters of such hills within 500 metres constituting an “Aravalli range.”
Aravalli Hills Controversy Explained: कौन सा फैसला Rajasthan, Delhi…सब जगह मुसीबत लाएगा? देखिए अरावली के अस्तित्व की कहानी।https://t.co/Cm0ElDzsNm
Watch Full Video On YouTube With @Saurabh_Pinch #aravalli #Rajasthan #Delhi pic.twitter.com/fXl5PFgHx5
— News Pinch (@TheNewspinch) December 15, 2025
The government has argued that the redefinition provides legal clarity and limits mining to a very small portion of the overall area, while enabling restoration and conservation initiatives. Officials say only about 0.19 per cent of the total Aravalli region would be affected.
Opposition parties and environmental groups, however, contend that the new definition excludes large swathes of low-lying hills, potentially removing protections from more than 90 per cent of the range. Congress leaders have accused the government of diluting environmental safeguards and undermining the Forest Conservation Act.
The controversy has also drawn attention to alleged links between policy changes and powerful industrial interests, including mining companies operating in Rajasthan. While no firm has been named in official documents, critics claim the redefinition could benefit large corporate players.
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Public protests and legal challenges followed the announcement, prompting the Supreme Court to pause further proceedings and seek wider consultation. Experts warn that increased mining could worsen air pollution, strain groundwater resources and damage biodiversity.
As debates continue, the Aravalli issue has become a flashpoint in India’s broader struggle to balance economic development with environmental sustainability.