Quiz: The World's Longest Tunnels

Traversing underneath mountains, cities, and even oceans, tunnels require incredible feats of engineering to ensure structural integrity and long-term safety. While humankind has been building tunnels for centuries—some of the earliest known tunnels date back to the 8th century BC—over the last century, engineers have made it possible to construct tunnels of new extraordinary lengths. And there are always even longer tunnels in the works or under construction.

Test your knowledge about some of the longest subterranean road and rail passages currently open to traffic with this ASME quiz.