Key Highlights
- Tin Bigha Passage is a 178‑meter‑long, 85‑meter‑wide corridor that reunites the Dahagram‑Angarpota enclave with Bangladesh’s mainland.
- Originally conceived in the 1974 Indira‑Gandhi–Sheikh Mujibur Rahman Treaty, the strip was formally handed over to Bangladesh in 2011.
- Since its 24‑hour opening on 19 October 2011, the corridor has facilitated uninterrupted movement of residents for health, education and trade.
- Joint Indian BSF and Bangladeshi security oversight ensures safe transit and underlines bilateral cooperation.
Detailed Insights
The Tin Bigha Passage lies on the frontier of West Bengal’s Cooch Behar district and Bangladesh’s Lalmonirhat district. Measuring roughly 178 m in length and 85 m in width, it forms a slender conduit that links the isolated Dahagram‑Angarpota enclave—home to several thousand people—with the rest of Bangladesh. The enclave’s isolation previously forced inhabitants to traverse Indian territory or endure lengthy detours for basic services. Following decades of diplomatic negotiations, the 1974 treaty between Prime Minister Indira Gandhi and President Sheikh Mujibur Rahman set the framework for land‑swap arrangements, yet political impasses delayed implementation. In 2011, India granted a lease of the corridor, permitting Bangladeshis to use it permanently. The route was opened round‑the‑clock on 19 October 2011, dramatically reducing travel times to hospitals, schools and markets.
Operational control rests with the Indian Border Security Force, which coordinates with Bangladeshi security agencies to monitor traffic, prevent illegal crossings, and maintain the corridor’s integrity. The seamless flow of persons and goods across Tin Bigha has become a tangible emblem of Indo‑Bangladeshi goodwill, easing humanitarian concerns while reinforcing border stability.
Key Concepts
- Enclave: A territory of one sovereign state that is completely surrounded by the land of another state.
- Corridor (Passage): A narrow strip of land that provides a link between a detached region and its main territory, facilitating movement and trade.
- Indira‑Gandhi–Sheikh Mujibur Rahman Treaty (1974): A bilateral agreement aimed at resolving border disputes and exchanging territories between India and the newly independent Bangladesh.
- Border Security Force (BSF): The Indian paramilitary organization tasked with guarding India’s land borders and overseeing cross‑border transit points.