subHimalayan
Sub-Himalayan, commonly known as the Siwalik Hills, is the outermost series of foothills of the Himalaya. This physiographic and geological zone lies between the Lesser Himalaya to the north and the Terai plains to the south, extending across parts of Pakistan, India, Nepal and into Bhutan. The Sub-Himalaya forms a continuous, east–west aligned belt of low to moderate elevation that marks the foreland boundary of the greater mountain system.
Geologically, the Sub-Himalaya consists mainly of Neogene sedimentary rocks, including sandstone, siltstone, mudstone and conglomerates. These
Geomorphically, the range appears as a series of parallel ridges with broad valleys and is characterized by
Human and ecological significance is substantial. In Nepal, the Chure Hills and related sub-Himalayan terrain play