Option 1:

In this option, the length of the tunnel, designed to overcome the Murovdag ridge, is 13.6 km and the length of the railway line is about 88 km.

Option 2:

In this option, the length of the tunnel, designed to overcome the Murovdag ridge, is 10.8 km and the length of the railway line is about 83.5 km.

Option 3:

In this version, there are two tunnels with lengths of 11.7 km and 12.1 km. The total length of the railway line is 63.8 km.

Option 4:

The advantage of this option is that the fourth option is considered the most strategically advantageous among all options. The railway line envisaged in the fourth option is the most convenient option for the freight transportation of minerals located in the Dashkesan, Gadabay and Kalbajar regions. At the same time, in this option, starting from 20+000 km or 25+000 km of the planned railway line, a direct railway line to the Gadabay region can be built in the future.