How is the boundary for Lyngkhat-III/Sonarhat connected with International Boundary Pillars?
The boundary for Lyngkhat-III/Sonarhat is connected with International Boundary Pillars in the following way:

The line begins at existing Boundary Pillar No. 1266/13-S, which runs along a nallah southwards until it meets another nallah in an east-west direction. From there, it follows the northern edge of the nallah in an easterly direction until it reaches existing International Boundary Pillar No. 1267/4-R-B and No. 1267/3-R-I.