The Pyongyang Metro is one of the deepest metros in the world. Its track is supposedly approximately 110 metres deep underground and serves as a bomb shelter. It consists of two lines with 17 stations: the Chollima line and the Hyoksin line. The two lines intersect at Chonu Station. Construction of the metro network started in 1965, and the first stations were built between 1969 and 1972.
The metro is completely underground. Its design was based on metro networks in other communist countries, particularly the Moscow Metro. Both networks share many characteristics, such as the great depth of the lines (100 meters plus) and the large distance between stations. Another common feature is the Socialist realist art that can be found in the stations, such as mosaics, murals, and statues.
Frog on the border 