The subterranean world beneath London has many secrets -- hidden railways, ghostly abandoned stations, government war rooms.
원문출처 : http://www.cnn.com/2016/08/16/foodanddrink/growing-underground-london-bomb-shelter-farm/index.html
원문출처 : http://www.cnn.com/2016/08/16/foodanddrink/growing-underground-london-bomb-shelter-farm/index.html