Dahala Khagrabari
26°08′59″N 88°45′43″E / 26.14973888°N 88.76195555°E
Dahala Khagrabari (#51) (Bengali: দাহালা খাগড়াবাড়ী (#৫১)) was an Indian enclave located on the Bangladesh–India border belonging to the district of Cooch Behar in the state of West Bengal. This was a piece of India within a piece of Bangladesh within a piece of India within Bangladesh, making it the only third-order enclave (or counter-counter enclave) in the world until 1 August 2015, when it was ceded to Bangladesh.
At 7,000 square metres (1.7 acres)— approximately the size of an association football field— it was one of the smallest of the India–Bangladesh enclaves: 106 Indian exclaves inside Bangladesh and 92 Bangladeshi exclaves inside India.