In the north of Kashmir is Karakoram Range. The second highest peak in the world, Mount Godwin Austen is situated here. This part of the Himalayas and its passes are high and snow-covered in the winter. The Karakoram highway via Gilgit is connected to Central Asia but there was little communication through this route.

The valley of Kashmir is surrounded by high mountains. However, it could be reached through several passes. The Kashmir valley remains unique for its tradition and culture. Nepal is also a small valley under the foot of the Himalayas and it is accessible from Gangetic plains through a number of passes.

In the east, the Himalayas extend up to Assam. The important mountains in this region are Pat Koi, Nagai and Lushai ranges. These hills are covered with thick forests due to heavy rains and mostly remain inhospitable. The mountains of northeast India is difficult to cross and many parts of this region had remained in relative isolation.

The Indo-Gangetic Plain

The Indo-Gangetic plain is irrigated by three important rivers, the Ganges, Indus and Brahmaputra. This vast plain is most fertile and productive because of the alluvial soil brought by the streams of the rivers and its tributaries.

The Indus river rises beyond the Himalayas and its major tributaries are the Jhelum, Chenab, Ravi, Sutlej and Beas. The Punjab plains are benefited by the Indus river system. The literal meaning of the term ‘Punjab’ is the land of five rivers. Sind is situated at the lower valley of the Indus. The Indus plain is known for its fertile soil.

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