The problems were immense ​ — torrential rains, landslides, and mudslides, as well as tunneling through solid rock and, even more difficult, lithomargic soft soil, described as being like toothpaste.
એમાં એશિયાનો સૌથી ઊંચો પનવેલ નદી પૂલ પણ બાંધવામાં આવ્યો.