After successful completion of the exchange of enclaves, Bangladesh and India have begun demarcating the land in adverse possession and the unmarked areas between the neighbouring countries to end their long pending border disputes.

India will receive 2,777 acres of land already in its adverse possession and transfer 2,267 acres of land to Bangladesh, according to official sources. The adversely possessed pieces of land are located at 25 points along the border with West Bengal, Tripura, Meghalaya and Assam.

Disputes will be resolved also over 6.5-km un-demarcated land boundary -- 1.5 km at Doykhata under Nilphamari district, 2 km at Muhurir Char in Feni and 3 km at Lathitila in Moulvibazar.

The ground demarcation of the boundary will be completed by June 30 next year, officials said.

Officials of the survey departments of the two governments, border security forces and the local administrations began surveying the disputed areas, diplomatic sources said.

Surveys by both the sides are expected to end by January 2016.

After completion of the demarcation of areas in adverse possession, boundary pillars will be set up by March, the sources said.

Bangladesh and India shall then print, sign and exchange the interim strip maps by June 30 of the year, according to a protocol of 2011.

Once the boundary pillars are erected, the humanitarian crisis that followed the erroneous division of India by British lawyer Cyril John Radcliffe will end, according to the officials.   

Earlier on November 30, the two countries completed exchanging 162 enclaves.

Regarding the exchange of territories in adverse possession, both the countries have decided to solve the disputes, as recommended after the joint surveys, avoiding large scale uprooting and displacement of populations against their will. 

Survey officials have been working to demarcate land since November 16 at the Meghalaya border, while another team recently began surveying disputed land at South Berubari in Jalpaiguri district of West Bengal, sources said.

According to an official estimate, Bangladesh will have to transfer 2,398.05 acres of land to West Bengal, 240.58 acres to Meghalaya and 138.41 acres to Tripura.

It will, however, receive 1957.59 acres from India's West Bengal, 41.702 acres from Meghalaya and 268.39 acres of land from Assam.

Assam will give up its claim over 268.40 acres, including 193.85 acres of land in Thakurani Bari-Kalabari (Boroibari) (Kurigram) in Dhubri and 74.54 acres in Pallathal (Moulvibazar) in Karimganj, which are currently in adverse possession of Bangladesh.