<P> Coordinates: 26 ° 18 ′ 3" N 88 ° 59 ′ 1" E ﻿ / ﻿ 26.30083 ° N 88.98361 ° E ﻿ / 26.30083; 88.98361 </P> <P> The Tin (or Teen) Bigha Corridor (Bengali: তিনবিঘা করিডর) is a strip of land belonging to India on the West Bengal--Bangladesh border which, in September 2011, was leased to Bangladesh so that it can access its Dahagram--Angarpota enclaves . It is based at Patgram upazila town . </P> <P> According to the Indira Gandhi - Sheikh Mujibur Rahman treaty of 16 May, 1974, India and Bangladesh were to hand over the sovereignty of the Tin Bigha Corridor (178 by 85 metres (584 ft × 279 ft)) and South Berubari (7.39 km (2.85 sq mi)) to each other, thereby allowing access to the Dahagram--Angarpota enclaves and the Indian enclaves adjacent to South Berubari . Bangladesh did hand over the sovereignty of the smaller South Berubari to India instantly in 1974 . India, however, could not transfer the Tin Bigha Corridor to Bangladesh as it required constitutional amendment which could not be done due to political reasons . </P> <P> After much Bangladesh government protest, India, instead of handing over sovereignty in 2011, proposed to lease the Tin Bigha Corridor to Bangladesh for a certain time . South Berubari, meanwhile, would remain in the possession of India . </P>

Tin bhiga lease by india to bangladesh was a part of