The longest subway line in the world, the 70-km Big Circle Line (BCL), has opened in Moscow. The metro line was built between 2011 and 2022, according to the Xinhua news agency.
The BCL’s first segment debuted in 2018, and it’s second, a 20-km extension that is the longest in the system’s history, debuted in December 2021.
The BCL includes 31 stations, 24 of which have 47 interchanges with current and upcoming metro stations in the capital.
