the.com/tunnel
a tube of pure audacity, daring mountains and oceans to just move aside
means A passage dug horizontally through earth, rock, or beneath water, letting roads, trains, or people pass straight through what would otherwise block the way.
from From Middle English 'tonel', borrowed from Old French 'tonnel' — a cask or barrel, a diminutive of 'tonne' (tun). The word started life meaning a rounded, barrel-shaped vessel or net, and the sense slid toward 'a tube-shaped passage' as English speakers seized on the hollow, curving shape. So beneath every mountain-piercing tunnel lies, etymologically, a humble little wine barrel.
- channel tunnel
- runs 38 km undersea between England and France
- oldest known
- Babylonians built one under the Euphrates 4,000 years ago
- vault effect
- long tunnels need fans to vent deadly exhaust
- the gotthard
- 57 km of Alps drilled, the world's longest rail tunnel
- light ahead
- the phrase exists because tunnels genuinely curve out of sight
channel tunnel — 50.46 km rail tunnel beneath english channel connecting uk and france, opened 1994
gotthard base tunnel — 57 km railway tunnel through swiss alps, world's longest, opened 2016
seikan tunnel — 53.85 km rail tunnel beneath tsugaru strait connecting honshu and hokkaido, japan, opened 1988