The Indus River marks the western boundary of the Siwalik Hills.

The Brahmaputra River marks the eastern boundary of the Siwalik Hills.

The Siwalik Hills stretch for approximately 2,000 km from the Indus River to the Brahmaputra River.

The Siwalik Hills have an average width of approximately 100 km.

The Siwalik Hills are not particularly high, with the highest point being below 2,000 meters.

The Siwalik Hills have a subtropical climate, with hot summers and mild winters.

The Siwalik Hills are covered in subtropical forest, with a variety of trees and shrubs.

The Siwalik Hills are home to a variety of wildlife, including elephants, rhinoceroses, and crocodiles.

The Siwalik Hills are known for their fossils, which include the remains of ancient animals such as elephants, rhinoceroses, and crocodiles.

The Siwalik Hills are important for agriculture, forestry, mining, and tourism.

The Siwalik Hills are facing a number of environmental challenges, including deforestation, soil erosion, water pollution, and climate change.

A number of conservation efforts are being made in the Siwalik Hills, including reforestation, soil conservation, water treatment, and climate change mitigation.

The future of the Siwalik Hills is uncertain, as they are facing a number of environmental challenges. However, conservation efforts are being made to protect the hills and their biodiversity.

A number of things can be done to protect the Siwalik Hills, including reducing deforestation, promoting sustainable agriculture, controlling pollution, and educating the public.

The Siwalik Hills are important to India for a number of reasons, including providing a natural barrier against floods, being a source of water and timber, being home to a variety of wildlife, and being a popular tourist destination.