The line of length 1291 m includes 3 passenger stations.
Outrun intervals are 816 and 475 m.
The train passes them for 3 and 2 min with speed up to 30 km per h.
The starting station "Entrance gate" is maintained as entraining-disembarking one,
the middle station "hall Abkhazia" - as disembarking one,
and the final station "hall Anakopea" - as entraining one.
The line is one-tracked, narrow-gauged. Width of a gauge is 914 mm.
The depot is situated just before the starting station at side,
opposite to the tunnel to the cave.
The double-tracked branchs are available in tunnel after starting station
and in a hall of final station.
Also between starting and middle stations there are 2 asides
towards to service tunnel and station.
A small part of rail track before the depot comes out under coat.
Full length of all tunnels is about 2 km.
The 6-carloaded single train plies by the line.
Besides, there are 2 reserve passenger cars in the depot.
The power supplies of the rolling-stock are obtained from the contact rail,
located between running rails and shielded by a cover.
At stations the contact rail is not present, so the rolling-stock passes them by batteries.
The direct current with a voltage of 300 V is used.
The diameter of the horseshoe-like tunnel is about 2.5 m.
The rails are stacked on wooden cross ties.
On the one side of a track the side-path of 0.5 m width
is available for pass of the serving workers.
In a tunnel there is an duty illumination.
The traffic lights are not present. The mine' telephones are used as a communication facility.
The rail switches are manual elsewhere.
The regular passenger traffic is 0.7 mln in a season, i.e. up to 2 thousand per day.
The construction of subway was carried out in 1965-1975
by tunnel group No 9 and building-mounting train-group No 212
of company "Tbiltonnelstroy" under guidance of G.Djakeli.
The boring-exploding method was used.