Indonesia's first subway opens in its gridlocked capital

constructing these tunnels, stations over head rail systems, rail cars, entrances and exits, is one mammoth task, and financial undertaking, I've watched a few documentaries here on UK TV where they have constructed the new Jubilee line, there are so many unforeseen obstacles, soil, clay water pipes gas pips old burial sites, WW11 bombs you name it, so good luck to the construction company in Jakarta.