Explanation: Sikkim is a small state located in the northeastern part of India, nestled in the Himalayan mountain range. The state is known for its unique geographical features, which include its mountainous terrain and the presence of a basin-like structure. This basin is surrounded on three sides by steep mountain walls, which are a defining characteristic of Sikkim's topography.
The Himalayan range, which includes the Kanchenjunga, the world's third-highest peak, forms the northern and eastern boundaries of Sikkim. The steep mountain walls that surround the state on three sides create a natural basin, which is a depression in the Earth's surface that is surrounded by higher land. This basin-like structure is a result of the geological processes that have shaped the region over millions of years, including tectonic activity and erosion.
The geographical feature of Sikkim being surrounded by steep mountain walls on three sides is significant for several reasons. It influences the climate, biodiversity, and human settlement patterns in the region. The steep mountain walls create a rain shadow effect, leading to a diverse range of climatic conditions within a small area. The basin-like structure also plays a crucial role in the state's hydrology, as it collects and channels water from the surrounding mountains.
Understanding the geographical features of Sikkim is essential for comprehending its unique position within the Himalayan region. The steep mountain walls and the basin-like structure are not only defining characteristics of Sikkim's topography but also contribute to its rich biodiversity and cultural heritage. This geographical feature sets Sikkim apart from other regions and makes it a distinct and important part of India's northeastern landscape.
In conclusion, Sikkim is the correct answer because it is a state that is characterized by a basin surrounded on three sides by precipitous mountain walls, which is a unique and defining geographical feature of the region. This feature is a result of the geological processes that have shaped the Himalayan range and has significant implications for the state's climate, biodiversity, and human settlement patterns.