The Rajmahal Hills are located in the

Santhal Pargana division Santhal Pargana division constitutes six district administration units known as the divisions of Jharkhand state in eastern India. Origin of name Santal Pargana derives its name from two words: " Santal", a major inhabited tribe in the region an ...

Jharkhand Jharkhand (; ) is a States and union territories of India, state in East India, eastern India. The state shares its border with the states of West Bengal to the east, Chhattisgarh to the west, Uttar Pradesh to the northwest, Bihar to the north ...

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

. They were located on the northern margin of the

Gondwana Gondwana ( ; ) was a large landmass, sometimes referred to as a supercontinent. The remnants of Gondwana make up around two-thirds of today's continental area, including South America, Africa, Antarctica, Australia (continent), Australia, Zea ...

supercontinent, and its hills are today inhabited by the Sauria Paharia people whilst its valleys are dominated by the

Santhal people The Santal (or Santhal) are an Austroasiatic-speaking Munda ethnic group of the Indian subcontinent. Santals are the largest tribe in the Jharkhand and West Bengal in terms of population and are also found in the states of Odisha, Bihar, Assam ...

. The hills span over an area of . Volcanic activity during the

Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately 143.1 Mya. ...

resulted in the formation of the Rajmahal Traps. The hills are approximately located at . The Rajmahal hills are named after the town of

Rajmahal Rajmahal is a subdivisional town and a notified area in Rajmahal subdivision of the Sahebganj district in the Indian state of Jharkhand. It is situated at the banks of Ganges and was former capital of Bengal Subah under Mughal governor, Man S ...

which lies in the eastern Jharkhand. The hills trend north-south with an average elevation of , from the Sahibganj district to the Dumka district. The

River Ganges The Ganges ( ; in India: Ganga, ; in Bangladesh: Padma, ). "The Ganges Basin, known in India as the Ganga and in Bangladesh as the Padma, is an international which goes through India, Bangladesh, Nepal and China." is a trans-boundary riv ...

wanders around the hills changing the direction of flow from east to south.

Francis Buchanan-Hamilton Francis Buchanan (15 February 1762 – 15 June 1829), later known as Francis Hamilton but often referred to as Francis Buchanan-Hamilton, was a Scottish surgeon, surveyor and botanist who made significant contributions as a geographer and zoolo ...

travelled through the Rajmahal hills in the early 19th century. He described the hills that seemed impenetrable in a zone where few travellers had been. He wrote that everywhere people were hostile, apprehensive of officials and unwilling to talk and, in some cases, left their villages and absconded.

Fossils

The plant fossil bearing inter-trappean beds of the Rajmahal Formation have been declared

National Geological Monuments of India National Geological Monuments are geographical areas of national importance and Geoheritage, heritage, as notified by the Government of India's Geological Survey of India (GSI), for their maintenance, protection, promotion and enhancement of g ...

by the

Geological Survey of India The Geological Survey of India (GSI) is a scientific agency of India. It was founded in 1851, as a Government of India organization under the Ministry of Mines, one of the oldest of such organisations in the world and the second oldest survey ...

(GSI), for their protection, maintenance, promotion and the enhancement of

geotourism Geotourism is tourism associated with geological attractions and destinations. Geotourism (tourism with a geological base) deals with the abiotic natural and built environments.Sadry, B.N.(2009)''Fundamentals of Geotourism: with special emphasis ...

.National Geological Monument, from Geological Survey of India website

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A Monograph on National Geoheritage Monuments of India
',

INTACH The Indian National Trust for Art and Cultural Heritage (INTACH) is a non-profit charitable organisation registered under the Societies Registration Act, 1860. In 2007, the United Nations awarded INTACH a special consultative status with the ...

, March 2016 The Rajmahal hills contain plant fossils which are . The fossils here have attracted

geologist A geologist is a scientist who studies the structure, composition, and History of Earth, history of Earth. Geologists incorporate techniques from physics, chemistry, biology, mathematics, and geography to perform research in the Field research, ...

s and palaeobotanists from all over the world. The Birbal Sahni Institute of Palaeobotany in

Lucknow Lucknow () is the List of state and union territory capitals in India, capital and the largest city of the List of state and union territory capitals in India, Indian state of Uttar Pradesh and it is the administrative headquarters of the epon ...

has a collection of them. There are fears of these fossils disappearing, as the state government in 2018 gave a mining lease in the area to private companies.

References

Hills of Jharkhand National Geological Monuments in India {{Jharkhand-geo-stub