The Circle MRT Line (CCL) is a medium-capacity Mass Rapid Transit line in Singapore operated by SMRT Corporation. It runs a currently incomplete loop from Dhoby Ghaut station in the city area of Singapore to HarbourFront station in the south via Bishan station in Central Singapore. It also has a branch to Marina Bay station from Promenade station, which will be extended to Harbourfront station in the future to form a complete loop. Coloured orange on the rail map, the fully-underground line is long with 30 stations. Travelling from one end of the line to the other takes about an hour.