The Aravalli Hills are among the oldest mountain ranges in the world, formed about 2.5 billion years ago. Though not very high, they are rich in minerals and home to ancient forts. They also act as a barrier against the eastward spread of the Thar Desert.
Class 7 Social Science Chapter 1 Geographical Diversity of India question answer
Class 7 NCERT Social Science India and the World: Land and the People Chapter 1 Geographical Diversity of India
The Aravalli Hills are one of the world’s oldest fold mountain ranges, dating back over 2.5 billion years. Stretching across Rajasthan, Gujarat, Haryana and Delhi, they are relatively low in height but geologically significant. Their peaks, like Mount Abu, rise over 1700 meters. The hills are rich in minerals such as zinc, copper and marble. Historically, they hosted important forts like Chittorgarh and Kumbhalgarh. Environmentally, they prevent the desert from spreading east and support diverse flora and fauna.
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