‘What is a mountain?’ If a teacher asks a primary class student, the future students may reply, ‘Any big rocky structure above 100 meters is a mountain’
Mountains that are less than 100 meters in height may not be classified as mountains. This observation is from the Supreme Court’s judgment in the Aravalli case on 20-11-2025, not my own definition. The Aravalli range has largely vanished, leading to protests in North India, particularly in Rajasthan, Haryana, and Delhi. I have nothing new to say, as the subject has already been extensively presented by the media and on social media. My only question is how this 100-meter benchmark has been finalised. Why 100 meters, why not 50 or 25 meters? I do not find any logic or rhyme in such a decision. The decision is arbitrary and challengeable. However, the decision is currently on hold. We need to wait for the Supreme Court to review its decision and possibly consider new definitions in January 2026.
The Aravalli Range is one of the oldest mountain systems in the world, and it faces multiple serious environmental and governance issues, especially across Rajasthan, Haryana, and the Delhi NCR. The core issue is illegal Mining. Extensive mining of stone, marble, and quartz has been occurring. Environmentalists argue that the mining leads to hill flattening, loss of vegetation, groundwater depletion, and dust pollution. The mining mafia is not ready to yield. The second important issue is the clearing of forests for real estate, roads, resorts, and agriculture, which leads to soil erosion and loss of native species. The Wildlife corridors are slowly destroyed due to rampant urbanisation & Real Estate activities. Forest land reclassified as “non-forest” or “revenue land” to permit construction, especially in Gurugram, Faridabad, Alwar, and Delhi NCR areas. The Aravalli range serves as a natural groundwater recharge system, but its destruction has exacerbated the water crisis in Rajasthan, Haryana, and Delhi. The loss of the Aravallis removes a natural barrier against desert dust from the Thar and contributes to severe air pollution in Delhi–NCR. The reduced carbon sequestration has already started creating havoc. There is a threat to biodiversity, and invasive species are seen replacing the natural flora. When the court takes up the case again in January 2026, we hope that some goodwill will prevail and the Earth’s oldest mountain will be saved from destruction. In the name of development, let us not dilute definitions just to accommodate vested interests and then do the mutual mudslinging at the cost of sustainable development
Dr V Selvarajan 