The ongoing Diamond Quadrilateral high-speed rail project in this country parallels the Golden Quadrilateral that connects four of its major cities.
The world's longest railway platform is found in this country. In this country, numerous z-reverses and the Agony Point loop are used to help flatten the effective gradient of the line taken by the steam-powered "Toy Train" up to Ghoom Station. Frederick William Stevens designed an ornate Gothic Revival railway station in this country that was formerly called Victoria Terminus. The ongoing Diamond Quadrilateral high-speed rail project in this country parallels the Golden Quadrilateral that connects four of its major cities. A circular suburban railway line in this country has stations that serve the old Dum Dum Arsenal as well as the Eden Gardens cricket stadium. This country's DHR railway passes by the southern face of the world's third-tallest mountain, Kanchenjunga. For 10 points, name this country where you could take an extremely crowded train from Delhi to Mumbai.
The world's longest railway platform is found in this country.
India [or Republic of India; or Bharat Ganarajya] &lt;Geography&gt;