Panoramic view of Aravalli mountain range

India's Oldest
Mountain Range

650 Million Years of Geological Wonder

What Are the Aravalli Hills?

The Aravalli Range is a mountain range in Northern-Western India, running approximately 692 km in a south-west direction, starting near Delhi, passing through southern Haryana, Rajasthan, and ending in Gujarat. This ancient range is one of the oldest fold mountains in the world.

Stretching from Delhi to Gujarat, the Aravalli Range represents India's geological heritage spanning over 650 million years. These mountains were once as high as the Himalayas but have been worn down by erosion over millennia, creating a unique and diverse landscape.

Geological Timeline

From formation to present day - a journey through deep time

650 Million BCE

Formation of the Aravalli Range

During the Pre-Cambrian era, massive tectonic forces folded the earth's crust, creating these ancient mountains. At their peak, they may have rivaled today's Himalayas in height.

200-50 Million BCE

Erosion and Weathering

Continuous weathering and erosion gradually wore down the once-towering peaks, creating the rolling hills and valleys we see today.

3000 BCE - 1500 BCE

Indus Valley Civilization

The Aravalli region was home to several Harappan settlements. Ancient peoples relied on the range's resources and water systems for agriculture and trade.

600-1200 CE

Medieval Kingdoms

Rajput kingdoms built magnificent forts atop Aravalli peaks - including famous fortifications like Kumbhalgarh and Chittorgarh.

1947 - Present

Modern Conservation Challenges

Post-independence development brings threats from mining, urbanization, and deforestation. Conservation movements emerge to protect this ancient heritage.

Geography & Extent

Physical Characteristics

  • Length: Approximately 692 kilometers (430 miles)
  • Width: 10 to 100 kilometers at various points
  • Highest Peak: Guru Shikhar (1,722 m / 5,650 ft) in Mount Abu
  • Average Height: 300-900 meters above sea level
  • States Covered: Delhi, Haryana, Rajasthan, Gujarat

The range acts as a natural divide between the Thar Desert to the northwest and the fertile plains to the southeast. This geographic position makes it crucial for regional climate and water security.

Map showing Aravalli range extent
692 km Total Length
1,722 m Highest Peak
4 States Geographic Span
50 Million+ People Dependent

Cultural & Religious Significance

Ancient fort on Aravalli hills

Historical Forts

The Aravalli hills are dotted with magnificent forts and palaces built by Rajput kings. Kumbhalgarh, Amber Fort, and Chittorgarh stand as testaments to the region's rich history.

Religious site in Aravalli

Sacred Sites

Mount Abu hosts the famous Dilwara Jain Temples, architectural marvels carved from marble. Many Hindu temples and sacred groves are scattered throughout the range.

Traditional community near Aravalli

Indigenous Communities

Tribal communities have lived in harmony with the Aravalli ecosystem for centuries, maintaining traditional knowledge of forest management and sustainable resource use.

Ecological Importance

Why the Aravalli Range matters for millions of people

Desert barrier function of Aravalli

Desert Barrier

Prevents the westward expansion of the Thar Desert, protecting agricultural lands and cities.

Water conservation in Aravalli

Water Security

Recharges groundwater aquifers that supply water to Delhi-NCR and surrounding regions.

Climate regulation by Aravalli forests

Climate Regulation

Moderates local climate, influences monsoon patterns, and acts as carbon sink.

Air purification by Aravalli ecosystem

Air Quality

Acts as the lungs of Delhi-NCR, filtering air and reducing pollution levels.

Protect This Ancient Heritage

The Aravalli Hills have stood for 650 million years. Will they survive another century? Your action today can make the difference.

Take Action