Geography
How many kilometers long is the longest railway tunnel in the world?
57
Background
The Gotthard Base Tunnel in Switzerland stretches 57 kilometers. It runs deep through the Alps and links north to south. Trains only need about 17 minutes to pass through it. A giant tunnel hidden inside the mountain.
More Geography questions
What is the only continent without a desert?
See questionWhich is larger in area, Australia or Brazil?
See questionHow many African countries are landlocked?
See questionWhat is the longest river in South America?
See questionHow many countries does the Amazon River flow through?
See questionHow many countries share a border with Germany?
See question