The Aravalli mountain ranges, ancient natural barriers crucial for climate regulation and biodiversity, face confusion regarding their definition. A Supreme Court-directed panel is working to formulate a uniform definition, but challenges arise from varying elevations and the non-uniform hilly terrain across districts in Gujarat, Rajasthan, Haryana, and Delhi. The court has asked states to provide reasons for their definitions, with Rajasthan referencing a 1968 land reform classification. The ecological threat from mining adds urgency to establishing clear boundaries.