The India-Nepal border is a 1,751-kilometer-long international boundary that separates the two countries. It runs from the eastern state of Sikkim to the western region of Uttarakhand, passing through various terrains, including mountains and plains. This border is unique as it is open, allowing citizens of both countries to cross without a visa. The border is significant for trade, cultural exchange, and security. It features several key crossings, such as the Sunauli and Birgunj points, which facilitate commerce. Additionally, the border area is home to diverse communities that share linguistic and cultural ties, enhancing the relationship between India and Nepal.