The 'Rajmahal Hills' are
Jurassic Period hills named after the town of
Rajmahal which lies to the east in the state of
Jharkhand in
India. The hills are oriented in a north-south axis with an average elevation of 200-300 m (600-1,000 ft). The
River Ganges meanders around the hills changing direction of flow from eastwards to southwards. Volcanic activity in the Jurassic Era caused the formation of these hills. The hills are approximately located at
References
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Rajmahal Hills, Banglapedia